CN101424809B - Touch control type lcd device - Google Patents
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- CN101424809B CN101424809B CN2008101802201A CN200810180220A CN101424809B CN 101424809 B CN101424809 B CN 101424809B CN 2008101802201 A CN2008101802201 A CN 2008101802201A CN 200810180220 A CN200810180220 A CN 200810180220A CN 101424809 B CN101424809 B CN 101424809B
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Abstract
The invention relates to a touch control type LCD device which comprises a first LCD unit, a touch control transistor, a first touch control sensing component and a touch control testing circuit, wherein the first LCD unit is coupled with a first scanning beam, the touch control testing circuit is coupled with a sensing wire, the touch control transistor comprises a grid electrode, a first end point and a second end point which is coupled with the sensing wire, and the grid electrode and the first end point are coupled with a second scanning beam. The first touch control comprises a first conductor coupled with the first end point of the touch control transistor, a second conductor coupled with the first scanning beam, and a first touch control conductor, when a sensing region of the touch control type LCD device is contacted, the first touch control conductor is electrically connected with the first conductor and the second conductor.
Description
Technical field
The present invention is about a kind of touch control type LCD device, particularly about a kind of touch control type LCD device of touch controllable function in display panels of integrating.
Background technology
Function advanced person's display gradually becomes the valuable feature of consumption electronic product now, and wherein LCD has become the display that various electronic equipments such as TV, mobile phone, PDA(Personal Digital Assistant), digital camera, computer screen or the widespread use of mobile computer screen institute have the high-resolution color screen gradually.Because LCD is carried for convenience and used now, the touch-control liquid crystal display panel that the user can directly touch also becomes the direction of the market development.Traditional resistance-type or capacitance touching control display panels are provided with extra resistance or capacitance component on panel, and change the position coordinates of judging touch point by the voltage/current value of detected object touch point.
Yet,, therefore can cause the light penetration rate of display panel to descend, and increase the integral thickness of display panel because assemblies such as resistance and electric capacity are to be set directly on the display panel.Therefore, if the touch-control sensing assembly can be integrated into display panels in, can reduce the overall weight and the volume of LCD, help stressing now the liquid crystal display product of thin design.
Summary of the invention
The invention provides a kind of touch control type LCD device, it is integrated in touch controllable function among the display panels, thereby can reduce the overall weight and the volume of liquid crystal indicator, help stressing now the demonstration product of thin design, and support single-point and multi-point touch thereby applicable to the demonstration product of various sizes.
One embodiment of touch control type LCD device of the present invention comprises one first liquid crystal display, a touch-control transistor, one first touch-control sensing assembly and a touch control detection circuit.This first liquid crystal display is coupled to one first sweep trace, and this touch control detection circuit is coupled to a sense wire.This touch-control transistor comprises a grid, one first end points that is coupled to one second sweep trace and one second end points that is coupled to this sense wire.This first touch-control sensing assembly comprises one first conductor that is coupled to transistorized first end points of this touch-control, one second conductor that is coupled to this first sweep trace and one first touch-control conductor, wherein when a sensing area of this touch control type LCD device was touched, this first touch-control conductor was electrically connected this first conductor and this second conductor.
Another embodiment of touch control type LCD device of the present invention, comprise one first transparency carrier, with in opposite directions one second transparency carrier of this first transparency carrier, be arranged on this first transparency carrier and be coupled to one first sweep trace one first liquid crystal display, be arranged at a touch-control transistor and one first touch-control sensing assembly on this first transparency carrier.This touch-control transistor comprises a grid, one first end points that is coupled to one second sweep trace and one second end points that is coupled to a sense wire.This first touch-control sensing assembly comprises one first conductor that is arranged on this first transparency carrier and is coupled to transistorized first end points of this touch-control, be arranged on this first transparency carrier and be coupled to one second conductor of this first sweep trace and be arranged at one first touch-control conductor on this second transparency carrier, wherein when a sensing area of this second transparency carrier was touched, this first touch-control conductor was electrically connected this first conductor and this second conductor.
A kind of touch control type LCD device of the present invention, touch controllable function is integrated among the display panels, thereby can reduce the overall weight and the volume of liquid crystal indicator, help stressing now the demonstration product of thin design, and support single-point and multi-point touch thereby applicable to the demonstration product of various sizes.
Description of drawings
Fig. 1 is an embodiment of touch control type LCD device of the present invention;
Fig. 2 is an embodiment of display panels of the present invention;
Fig. 3 and Fig. 4 are the structure of touch-control sensing assembly of the present invention and press an embodiment of operation;
Fig. 5 is a local layout embodiment of touch control type LCD device of the present invention;
Fig. 6 is an embodiment of the signal waveforms of display panels of the present invention;
Fig. 7 and Fig. 8 are another local layout embodiment of touch control type LCD device of the present invention;
Fig. 9 is the display panels of another embodiment of the present invention;
Figure 10 is the signal waveforms of the display panels of another embodiment of the present invention; And
Figure 11 is the display panels of another embodiment of the present invention.
Wherein, Reference numeral:
10 touch control type LCD devices, 12 gate drivers
14 source electrode drivers, 16 touch control detection circuit
20 display panels 30A liquid crystal displays
30D liquid crystal display 32A shows transistor
32D shows transistor 40 touch-control transistors
42 grids, 44 first end points
46 second end points 50A touch-control sensing assemblies
50B touch-control sensing assembly 50C touch-control sensing assembly
50D touch-control sensing assembly 52A first conductor
The 52B first conductor 52C first conductor
The 52D first conductor 54A second conductor
The 54B second conductor 54C second conductor
The 54D second conductor 56A first touch-control conductor
The 56B first touch-control conductor 56C first touch-control conductor
The 56D second touch-control conductor 58 sensing areas
58 ' touch-control sensing blind area, 60 first transparency carriers
The 62A first pedestal 62B second pedestal
62C the 3rd pedestal 70 first transparency carriers
78 color filter films, 90 display panels
92 sensing areas, 92 ' touch-control sensing blind area
100 display panels, 102 sensing areas
104 sensing areas
Embodiment
Fig. 1 is an embodiment of touch control type LCD device 10 of the present invention.This touch control type LCD device 10 comprises a gate drivers 12, one source pole driver 14, a touch control detection circuit 16 and a display panels 20.This gate drivers 12 is used for producing the one scan signal, and is sent to this display panels 20 by multi-strip scanning line G1-GI.This source electrode driver 14 is used for producing a voltage data signal, and is sent to this display panels 20 by many data line D1-DJ.16 in this touch control detection circuit is coupled to this display panels 20 by many sense wire B1-BK, is used for detecting the touched position of this display panels 20.
Fig. 2 is an embodiment of display panels 20 of the present invention.This display panels 20 comprises a liquid crystal display 30A, a liquid crystal display 30D, a touch-control transistor 40 and touch-control sensing assembly 50A.This liquid crystal display 30A shows that via one transistor 32A is coupled to one scan line GI-7, and this liquid crystal display 30D shows that via one transistor 32D is coupled to another sweep trace GI-4.This touch-control transistor 40 comprises a grid 42, one first end points 44 that is coupled to this sweep trace GI-4 and one second end points 46 that is coupled to a sense wire B3.This touch-control sensing assembly 50A comprises one first conductor 52A of first end points 44 that is coupled to this touch-control transistor 40, the one second conductor 54A that is coupled to this sweep trace GI-7 and one first touch-control conductor 56A.When a sensing area 58 of this touch control type LCD device 10 was touched, the first touch-control conductor 56A of this touch-control sensing assembly 50A was electrically connected this first conductor 52A and this second conductor 54A.
Fig. 3 and Fig. 4 are the structure of this touch control type LCD device 10 and press an embodiment of operation that Fig. 5 is a local layout embodiment of this touch control type LCD device 10.This touch control type LCD device 10 comprises one first transparency carrier 60 and one second transparency carrier 70, and itself and this first transparency carrier 60 in opposite directions.This first transparency carrier 60 can be a glass substrate, and this display panels 20, this sweep trace G1-GI, this data line D1-DJ and this sense wire B1-BK are formed on this first transparency carrier 60.This second transparency carrier 70 also can be a glass substrate and comprises a plurality of color filter films 78 (being shown in Fig. 5).
With reference to figure 3, this first transparency carrier 60 comprises the first pedestal 62A, the second pedestal 62B and the 3rd pedestal 62C, and the first conductor 52A of this touch-control sensing assembly 50A and the second conductor 54A are arranged on the 3rd pedestal 62C.This second pedestal 62B is arranged between this first pedestal 62A and this first conductor 52A, and the height of this first pedestal 62A is greater than the height of this second pedestal 62B.This second transparency carrier 70 is provided with a plurality of distance piece 72A-72C, its end towards this first transparency carrier 60 has conductive material 74 (for example ITO), and the conductive material 74 on this distance piece 72C is as the first touch-control conductor 56A of this touch-control sensing assembly 50A.
With reference to figure 3,50A is in the not synoptic diagram of conducting state for this touch-control sensing assembly.The first pedestal 62A on this first transparency carrier 60 is via the interval material 72A of these conductive material 74 these second transparency carriers 70 of contact.Relatively, the first touch-control conductor 56A of this touch-control sensing assembly 50A does not contact its first conductor 52A and the second conductor 54A as yet, and the interval material 72B on this second transparency carrier 70 does not also contact the second pedestal 62B on this first transparency carrier 60.
With reference to figure 4, it is the synoptic diagram that an object 80 (for example: hand or pen) presses this touch control type LCD device 10.When this object 80 presses a sensing area 58 of this touch control type LCD device 10, the first pedestal 62A on this first transparency carrier 60 still keeps in touch the interval material 72A of this second transparency carrier 70, and the first touch-control conductor 56A of this touch-control sensing assembly 50A also contacts its first conductor 52A and the second conductor 54A and is electrically connected.Relatively, the interval material 72B on this second transparency carrier 70 does not still contact the second pedestal 62B on this first transparency carrier 60 as yet.
If this object 80 continues to press this touch-control sensing assembly 50A downwards, that is when excessively forcing in this second transparency carrier 70, then the interval material 72B on this second transparency carrier 70 promptly contacts the second pedestal 62B on this first transparency carrier 60, so that avoid this object 80 excessively to damage the first touch-control conductor 56A, the first conductor 52A and the second conductor 54A of this touch-control sensing assembly 50A because of the application of force.
Fig. 6 is the signal waveforms of the display panels 20 of Fig. 2.The sweep signal (high-level voltage) that this gate drivers 12 produces should show transistor 32A via this sweep trace GI-7 conducting when T1, so that the voltage data signal that this source electrode driver 14 produces can show that transistor 32A is sent to this liquid crystal display 30A via this.Afterwards, the voltage of this sweep trace GI-7 is converted to low level by high levels, closes this demonstration transistor 32A.In like manner, the scanning voltage signal conducting in regular turn of these gate drivers 12 generations is coupled to the demonstration transistor of sweep trace G2, G3, GI-4.The spy's, this sweep trace GI-7 is the prime of this sweep trace GI-4.
The grid 42 of this touch-control transistor 40 is coupled to this sweep trace GI-4, and when T4, be scanned signal (high-level voltage) conducting, can't not be electrically connected this first conductor 52A and this second conductor 54A if this sensing area 58 is touched, then in 40 conduction periods of this touch-control transistor, the voltage of this sense wire B3 remains high levels.Relatively, if this object 80 makes this first touch-control conductor 56A be electrically connected this first conductor 52A and this second conductor 54A when pressing this sensing area 58, and this touch-control transistor 40 is scanned signal (high-level voltage) conducting when T4, and then the voltage of this sense wire B3 will be pulled down to low level (i.e. the low-voltage position standard of GI-7 is taken aim in scanning) by high levels.Afterwards, the voltage of this sweep trace GI-4 is converted to low level by high levels and after closing this demonstration transistor 32D, the voltage of this sense wire B3 will be charged to original high voltage level by low-voltage position standard.
What therefore, this touch control detection circuit 16 can be judged this object 80 by the voltage waveform (high levels is converted to low level) of this sense wire B3 laterally presses the position.In addition, this object 80 vertically presses the position and then can be calculated by this sweep trace GI-4 and learn.The spy's, if when having a plurality of objects 80 to press this display panels 20 simultaneously, after this touch control type LCD device 10 can utilize this gate drivers 12 to finish the scanning of all sweep trace G1-GI in regular turn, can learn the position that presses of these a plurality of objects 80, that is this touch control type LCD device 10 have single-point and function of multi-spot touch.The spy's, the discharge reference potential of this touch-control sensing assembly 50A is the low level voltage of prime sweep trace GI-7 when not being scanned, so this sense wire B3 can be discharged rapidly by high-level voltage.
Join Fig. 2 again, the sensing area 58 of this touch-control sensing assembly 50A is between this sweep trace GI-7 and this this sweep trace GI-4, that is this sensing area 58 is to be positioned at before this touch-control transistor 40.This-design formation one touch-control sensing blind area 58 ' between sweep trace GI-3 to GI.The method that solves this touch-control sensing blind area 58 ' can be by being provided with a touch-control sensing assembly separately between sweep trace GI-3 to GI, it is coupled to first end points 44 of this sweep trace GI and this touch-control transistor 40 during by touch-control.
Fig. 7 and Fig. 8 are another local layout embodiment of this first transparency carrier 60.With reference to figure 7, many sense wire (two sense wire B among Fig. 7
K-1And B
K-2) be coupled to this touch control detection circuit 16 via a signal path S1, also be about to many (for example N bar) sense wires parallel connections or polyphone to form an effective sensing area, wherein N can be between 1 to 10.The spy's, the touching signals of comparatively dense is distributed with and helps improve effective touching signals data, and significantly boosting algorithm is to the Coordinate Calculation precision.In addition, many (for example N bar) sense wires are coupled to this touch control detection circuit 16 via this signal path S1, that is this sense wire B
K-1, B
K-2Many to 1 design with these touch control detection circuit 16 employings, it helps to promote the uniformity coefficient of touching signals.
Join Fig. 6 again, after the voltage of this sweep trace GI-4 is converted to low level by high levels thereby closes this demonstration transistor 32D, the voltage of this sense wire B3 will be charged to original high levels by low level.Layout embodiment shown in Figure 7 is that uniaxially is to this sense wire B
K-1, B
K-2Charging.Relatively,, many sense wires form a loop (two sense wire B among Fig. 8 as if being connected
K-1And B
K-2), can be two-wayly to this sense wire B
K-1, B
K-2Charging is so that reduce this sense wire B significantly
K-1, B
K-2Duration of charging.That is, the in parallel or polyphone with many (for example N bar) sense wires and form a loop, so that reduce the duration of charging of this sense wire, wherein N can be between 1 to 10.
Fig. 9 is the display panels 90 of another embodiment of the present invention.The touch-control sensing assembly 50A that compares display panels shown in Figure 2 20 is coupled to a prime sweep trace and this touch-control transistor 40, and the touch-control sensing assembly 50B of display panels 90 shown in Figure 9 is coupled to back grade sweep trace and this touch-control transistor 40.This touch-control sensing assembly 50B comprises one first conductor 52B of first end points 44 that is coupled to this touch-control transistor 40, the one second conductor 54B that is coupled to this sweep trace G7 and one first touch-control conductor 56B.When a sensing area 92 of display panels 90 was touched, this first touch-control conductor 56B was electrically connected this first conductor 52B and this second conductor 54B.The spy's, this sweep trace G7 is the back level of this sweep trace G4.
Figure 10 is the signal waveforms of the display panels 90 of Fig. 9.The grid 42 of this touch-control transistor 40 is coupled to this sweep trace G4, and when T4, be scanned signal (high-level voltage) conducting, if this sensing area 92 is not touched at this moment thereby this first touch-control conductor 56B can't be electrically connected this first conductor 52B and this second conductor 54B, then in 40 conduction periods of this touch-control transistor, the voltage of this sense wire B3 remains high levels.Relatively, if this sensing area 92 is touched thereby this first touch-control conductor 56B is electrically connected this first conductor 52B and this second conductor 54B, and this touch-control transistor 40 is scanned signal (high-level voltage) conducting when T4, and then the voltage of this sense wire B3 will be pulled down to low level (i.e. the low-voltage position standard of back level sweep trace G7) by high levels.Afterwards, after the voltage of this sweep trace G4 is converted to low level by high levels thereby closes this demonstration transistor 32D, the voltage of this sense wire B3 will be charged to original high levels by low level.
Therefore, this touch control detection circuit 16 can laterally press the position by what the voltage waveform (high levels is converted to low level) of this sense wire B3 was judged touch point.In addition, touch point vertically presses the position and then can be calculated by this sweep trace G4 and learn.The spy's, if when having a plurality of objects to press this display panels 90 simultaneously, after this touch control type LCD device 10 can utilize this gate drivers 12 to finish the scanning of all sweep trace G1-GI in regular turn, can learn the position that presses of these a plurality of objects, that is this touch control type LCD device 10 have single-point and function of multi-spot touch.
Join Fig. 9 again, the sensing area 92 of this touch-control sensing assembly 50B is between this sweep trace G4 and this this sweep trace G7, that is this sensing area 92 is to be positioned at before this touch-control transistor 40.This design forms a touch-control sensing blind area 92 ' between sweep trace G1 to G4.The method that solves this touch-control sensing blind area 92 ' can be by being provided with a touch-control sensing assembly separately between sweep trace G1 to G4, it is coupled to first end points 44 of this sweep trace G1 and this touch-control transistor 40 during by touch-control.
Figure 11 is the display panels 100 of another embodiment of the present invention.Compare Fig. 2 or shown in Figure 9 touch-control sensing assembly 50A or 50B is respectively coupled to prime sweep trace or back level sweep trace, display panels 100 shown in Figure 11 is coupled to the prime sweep trace and is coupled to back level sweep trace by another touch-control sensing assembly 50D by a touch-control sensing assembly 50C.This touch-control sensing assembly 50C comprises one first conductor 52C of first end points 44 that is coupled to this touch-control transistor 40, the one second conductor 54C that is coupled to this sweep trace G1 and one first touch-control conductor 56C.When a sensing area 102 of this display panels 100 was touched, this first touch-control conductor 56C was electrically connected this first conductor 52C and this second conductor 54C.
This touch-control sensing assembly 50D comprises one first conductor 52D of first end points 44 that is coupled to this touch-control transistor 40, the one second conductor 54D that is coupled to this sweep trace G7 and one second touch-control conductor 56D.When another sensing area 104 territories of this display panels 100 were touched, this second touch-control conductor 56D was electrically connected this first conductor 52D and this second conductor 54D.The spy's, this sweep trace G1 is the prime of this sweep trace GI-4, this sweep trace G7 is the back level of this sweep trace GI-4.
The touch-control sensing assembly 50A of the display panels 20 of Fig. 2 is coupled to the prime sweep trace, therefore has this touch-control sensing blind area 58 ' between sweep trace GI-3 to GI.In addition, the touch-control sensing assembly 50B of the display panels 90 of Fig. 9 is coupled to back level sweep trace, therefore has this touch-control sensing blind area 92 ' between sweep trace G1 to G4.Relatively, the display panels 100 of Figure 11 is coupled to the prime sweep trace and is coupled to back level sweep trace by this touch-control sensing assembly 50D by this touch-control sensing assembly 50C, that is before this touch-control transistor 40, the touch-control sensing assembly is arranged all, therefore there is not the problem of touch-control sensing blind area.
Technology contents of the present invention and technical characterstic are open as above, however the technician of the technical field of the invention, in the spirit and scope of the invention that does not deviate from claims and defined, teaching of the present invention and openly can do all replacements and modification.For example, above disclosed many processing procedures can diverse ways be implemented or are replaced with other processing procedure, perhaps adopt the combination of above-mentioned two kinds of modes.
Claims (15)
1. a touch control type LCD device is characterized in that, comprises: first liquid crystal display, touch-control transistor, the first touch-control sensing assembly and a touch control detection circuit;
This first liquid crystal display is coupled to one first sweep trace;
This touch-control transistor comprises:
One grid is coupled to one second sweep trace;
One first end points; And
One second end points is coupled to a sense wire;
This first touch-control sensing assembly comprises:
One first conductor is coupled to transistorized first end points of this touch-control;
One second conductor is coupled to this first sweep trace; And
One first touch-control conductor, wherein when one first sensing area of this touch control type LCD device was touched, this first touch-control conductor was electrically connected this first conductor and this second conductor;
This touch control detection circuit is coupled to this sense wire.
2. according to the touch control type LCD device of claim 1, it is characterized in that this first sweep trace is the prime of this second sweep trace.
3. according to the touch control type LCD device of claim 1, it is characterized in that this first sweep trace is the back level of this second sweep trace.
4. according to the touch control type LCD device of claim 1, it is characterized in that, also comprise:
One second liquid crystal display is coupled to a three scan line; And
One second touch-control sensing assembly comprises:
One the 3rd conductor is coupled to transistorized first end points of this touch-control;
One the 4th conductor is coupled to this three scan line; And
One second touch-control conductor, wherein when one second sensing area of this touch control type LCD device was touched, this second touch-control conductor was electrically connected the 3rd conductor and the 4th conductor.
5. according to the touch control type LCD device of claim 4, it is characterized in that this first sweep trace is the prime of this second sweep trace.
6. according to the touch control type LCD device of claim 4, it is characterized in that this three scan line is the back level of this second sweep trace.
7. according to the touch control type LCD device of claim 1, it is characterized in that N bar sense wire is coupled to this touch control detection circuit via a signal path, N is between 1 to 10.
8. according to the touch control type LCD device of claim 7, it is characterized in that this N bar sense wire forms a loop.
9. a touch control type LCD device is characterized in that, comprises:
One first transparency carrier, one second transparency carrier, one first liquid crystal display, a touch-control transistor and one first touch-control sensing assembly;
This second transparency carrier, with this first transparency carrier in opposite directions;
This first liquid crystal display is arranged on this first transparency carrier and is coupled to one first sweep trace;
This touch-control transistor is arranged on this first transparency carrier, comprises:
One grid is coupled to one second sweep trace;
One first end points; And
One second end points is coupled to a sense wire;
This first touch-control sensing assembly comprises:
One first conductor is arranged on this first transparency carrier and is coupled to transistorized first end points of this touch-control;
One second conductor is arranged on this first transparency carrier and is coupled to this first sweep trace; And
One first touch-control conductor is arranged on this second transparency carrier, and wherein when one first sensing area of this second transparency carrier was touched, this first touch-control conductor was electrically connected this first conductor and this second conductor.
10. according to the touch control type LCD device of claim 9, it is characterized in that this first transparency carrier comprises one first pedestal and one second pedestal, this second pedestal is arranged between this first pedestal and this first conductor.
11. the touch control type LCD device according to claim 10 is characterized in that, this second transparency carrier comprises a plurality of intervals material, and this interval face has conductive material to the end of this first transparency carrier.
12. the touch control type LCD device according to claim 10 is characterized in that, the height of this first pedestal is greater than the height of this second pedestal.
13. the touch control type LCD device according to claim 9 is characterized in that, also comprises a color filter film, is arranged on this second transparency carrier.
14. the touch control type LCD device according to claim 9 is characterized in that, this first sweep trace is the prime of this second sweep trace.
15. the touch control type LCD device according to claim 9 is characterized in that, this first sweep trace is the back level of this second sweep trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101802201A CN101424809B (en) | 2008-11-28 | 2008-11-28 | Touch control type lcd device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101802201A CN101424809B (en) | 2008-11-28 | 2008-11-28 | Touch control type lcd device |
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| CN101424809A CN101424809A (en) | 2009-05-06 |
| CN101424809B true CN101424809B (en) | 2011-11-02 |
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| CN101587401B (en) * | 2009-06-22 | 2011-01-19 | 友达光电股份有限公司 | Touch-control panel and display device |
| TWI410702B (en) * | 2010-02-10 | 2013-10-01 | Au Optronics Corp | Touch display panel |
| CN101770312B (en) * | 2010-03-02 | 2012-07-04 | 友达光电股份有限公司 | Touch control display panel |
| CN102222475A (en) * | 2010-04-14 | 2011-10-19 | 联咏科技股份有限公司 | Display apparatus with touch function and two-dimension sensing method of touch panel |
| CN102236449A (en) * | 2010-04-29 | 2011-11-09 | 联咏科技股份有限公司 | Panel control device and operation method thereof |
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