CN201285541Y - Active matrix display device with optical touch panel - Google Patents

Abstract

The utility model relates to an active matrix display device with optical touch panel, which comprises a thin film transistor pixel array, a grid drive circuit, a source drive circuit, a plurality of first detecting lines, a plurality of second detecting lines, a first detector and a second detector, wherein the thin film transistor pixel array comprises a plurality of pixel units respectively containing a photoelectric conversion element, the photoelectric conversion element is electrically connected to the corresponding first and second detecting lines, the first detector comprises a first switch unit, a current measuring unit and a power management unit, the second detector comprises a second switch unit, a constant voltage unit and a system grounding unit, the power management unit synchronously controls the first and second switch units to make the photoelectric conversion element selectively operate between a light sensing mode and a solar battery mode, therefore, the dual functions of the touch panel and the solar cell are realized.

Description

Active matrix display device with optical touch panel

technical field

The utility model relates to an active matrix display device, in particular to an active matrix display device with an optical touch panel.

Background technique

TFT liquid crystal display is an active matrix display device, which mainly includes a transparent substrate, and a gate drive circuit, a source drive circuit, a thin film transistor pixel array, a plurality of scan lines arranged on the transparent substrate and a plurality of data lines, the thin film transistor pixel array further includes a plurality of pixel units, the plurality of pixel units are respectively arranged at the intersections of the scan lines and the data lines and electrically coupled to the corresponding scan lines and data lines, And each pixel unit includes a thin film transistor and a pixel electrode electrically connected with the thin film transistor; in addition, the gate driving circuit provides scanning signals to the scanning lines, and the source driving circuit provides image data signals to the data lines, thereby realizing Image display function.

At present, thin film transistor liquid crystal displays are widely used in various portable electronic devices due to their light weight and low power consumption, such as personal computers, mobile phones, digital cameras and personal digital assistants; In order to meet the demand for thinner and lighter devices, a thin film transistor liquid crystal display with an optical touch panel is proposed, which utilizes a photodiode disposed in each pixel unit as an optical sensing element to realize a touch function. Such a TFT-LCD can be found in US Published Patent Application No. 2006/0220077, the disclosure of which is incorporated herein by reference. In addition, as the global energy supply becomes increasingly tense, developing an active matrix display device capable of saving energy will definitely become one of the development trends of future products.

It can be seen that the above-mentioned existing active matrix display device obviously still has inconveniences and defects in structure and use, and needs to be further improved urgently. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new type of active-matrix display device with an optical touch panel is one of the current important research and development topics, and it has also become a goal that the industry needs to improve.

In view of the defects existing in the above-mentioned existing active matrix display devices, the inventor actively researches and innovates on the basis of years of rich practical experience and professional knowledge engaged in the design and manufacture of such products, and cooperates with the application of academic theories, in order to create a new type of display device. The active matrix display device with an optical touch panel can improve the general existing active matrix display device and make it more practical. Through continuous research, design, and after repeated trial samples and improvements, the utility model with practical value is finally created.

Contents of the invention

The main purpose of the utility model is to provide a new type of active matrix display device with an optical touch panel to overcome the defects of the existing active matrix display device, so that it can also have the function of a solar cell and thus save energy , very practical.

The purpose of this utility model and the solution to its technical problems are achieved by adopting the following technical solutions. The utility model proposes an active matrix display device with an optical touch panel, which includes: a thin film transistor pixel array, including a plurality of pixel units, each pixel unit including a photoelectric conversion element; a gate drive circuit , used to provide scan signals to the pixel unit; a source driver circuit, used to provide data signals to the pixel unit; a plurality of first detection lines and a plurality of second detection lines, the first The detection line and the second detection line are intersected, and the photoelectric conversion elements are respectively arranged at the intersection positions of the corresponding first detection line and the second detection line and are electrically coupled to the first detection line. The detection line and the second detection line; a first detector, including a first switch unit, a current measurement unit and a power management unit, the first switch unit is electrically coupled to the second A detection line, the power management unit includes a switch controller for generating a control signal to control the first switch unit so that the photoelectric conversion element selectively operates between a light sensing mode and a solar cell mode One, the current measurement unit is electrically coupled to the first switch unit and is enabled to measure the first switch unit through the first switch unit when the photoelectric conversion element operates in a light sensing mode. detecting the current value on the line; and a second detector including a second switch unit, a certain voltage unit and a system grounding unit, the second switch unit being electrically coupled to the second detection line And accepting the control of the control signal generated by the switch controller of the power management unit of the first detector, the constant voltage unit is electrically coupled to the second switch unit and in the The operation of the photoelectric conversion element is enabled in the light sensing mode to provide a certain voltage to the second detection line through the second switch unit, and the system grounding unit operates in the photoelectric conversion element in the Enabled in the solar battery mode to be electrically coupled to the second detection line through the second switch unit.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned active matrix display device with an optical touch panel, the power management unit further includes a boost unit electrically coupled to the first switch unit, when the photoelectric conversion element is operated at the In the solar battery mode and when the voltage transmitted by the photoelectric conversion element through the first switch unit is lower than a predetermined value, the voltage is boosted.

The aforementioned active matrix display device with an optical touch panel, wherein the active matrix display device further includes an energy storage element, and the power management unit further includes a power supply unit electrically coupled to the boost unit and The charge management unit between the energy storage elements is used to manage the charge and discharge of the energy storage elements.

The aforementioned active matrix display device with an optical touch panel, wherein the active matrix display device further includes a switch element, the switch element is electrically coupled to the energy storage element and the charging management unit A connection point between them and is closed under the control of the switch controller when the energy stored on the energy storage element is full.

The aforementioned active matrix display device with an optical touch panel, wherein the power management unit further includes a data collection unit and a data analysis unit; the data collection unit is electrically coupled to the current measurement unit for collecting the current value measured by the current measurement unit; the data analysis unit is electrically coupled to the data collection unit for analyzing the current value collected by the data collection unit to obtain Current touch position.

In the aforementioned active matrix display device with an optical touch panel, the first detector further includes a judging unit electrically coupled to the data analysis unit for judging the photoelectric conversion element touch state and light receiving state, and switch the operation of the active matrix display device according to the judgment result.

In the aforementioned active matrix display device with an optical touch panel, the first detector further includes a first communication unit, the first communication unit is electrically coupled to the switch controller, and the The second detector further includes a second communication unit, the second communication unit is electrically coupled between the first communication unit and the second switch unit to transmit the switch controller generated A control signal is transmitted to the second switch unit.

In the aforementioned active matrix display device with an optical touch panel, the photoelectric conversion element is a photodiode or a phototransistor.

The aforementioned active matrix display device with an optical touch panel, wherein the active matrix display device is a liquid crystal display device.

In the aforementioned active matrix display device with an optical touch panel, the liquid crystal display device is a reflective liquid crystal display device or a transflective liquid crystal display device.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Through the above technical solution, the active matrix display device with an optical touch panel of the present invention has at least the following advantages and beneficial effects:

Through the structural design of the first detector and the second detector, the embodiment of the present utility model can control the photoelectric conversion element to selectively operate between the light sensing mode and the solar cell mode, thereby enabling optical touch control The active matrix display device of the panel has dual functions of a touch panel and a solar battery, which increases the added value of the product and can realize the purpose of saving energy. In addition, the active matrix display device with the optical touch panel in the embodiment of the present invention may be but not limited to a liquid crystal display device. Furthermore, when the active matrix display device with an optical touch panel is a reflective or transflective liquid crystal display device, its energy consumption is relatively low, so that energy self-sufficiency can basically be achieved. In addition, the positions of the gate detector and the source detector in the embodiment of the present invention can be exchanged, which can also achieve the purpose of the present invention.

The utility model has the above-mentioned many advantages and practical value, it has great improvement no matter in product structure or function, has remarkable progress in technology, and has produced easy-to-use and practical effect, and compared with existing active type The matrix display device has enhanced outstanding functions, is more suitable for practical use, and has wide application value in the industry. It is a novel, progressive and practical new design.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

FIG. 1 is a schematic structural view of an active matrix display device with an optical touch panel provided by an embodiment of the present invention.

FIG. 2 is a functional block diagram of the gate detector and the source detector shown in FIG. 1 .

FIG. 3 is an equivalent circuit diagram of the active matrix display device shown in FIG. 1 performing the function of a touch panel.

FIG. 4 is an equivalent circuit diagram of the active matrix display device shown in FIG. 1 performing the function of a solar cell.

FIG. 5 is a functional block diagram of the power management unit shown in FIG. 2 .

FIG. 6 is a judgment flow chart of the judging unit shown in FIG. 5 .

10: Active matrix display device with optical touch panel

11: Transparent substrate 13: Pixel unit

132: Photoelectric conversion element 15: Gate drive circuit

16: Gallery detector 17: source pole driver circuit

18: Source detector 162: Switching unit

G1, G2,..., Gm: Gate detection line 1621: Switching element

S1, S2,..., Sn: source detection line 164: current measurement unit

182: Switch unit 166: Power management unit

1821: switch element 168: communication unit

188: Communication unit 1661: Switch controller

184: Constant voltage unit 1663: Data collection unit

186: System grounding unit 1665: Data analysis unit

19: Energy storage element 1667: Boost unit

S10, S12, S14: Step 1669: Charging management unit

1666: Judgment unit SW: Switch element

Detailed ways

In order to further explain the technical means and effects that the utility model adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the active matrix display device with an optical touch panel proposed according to the utility model will be described. Specific embodiments, structures, features and effects thereof are described in detail below.

The aforementioned and other technical contents, features and effects of the present utility model will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation, one can get a deeper and more specific understanding of the technical means and effects of the utility model to achieve the intended purpose, but the attached drawings are only for reference and description, and are not used to explain the present invention. Utility models are restricted. For convenience of description, in the following embodiments, the same elements are denoted by the same numbers.

Please refer to FIG. 1, which is a schematic structural view of an active matrix display device with an optical touch panel provided by an embodiment of the present invention, which includes: a transparent substrate (such as a glass substrate) 11 and a transparent A thin film transistor pixel array on the substrate 11, a plurality of scanning lines (not shown in the figure), a plurality of data lines (not shown in the figure), a gate driving circuit 15, a source driving circuit 17, a plurality of gate Electrode detection lines G1 , G2 , . . . , Gm, multiple source detection lines S1 , S2 , . . . , Sn, a gate detector 16 and a source detector 18 .

The TFT pixel array includes a plurality of pixel units 13 arranged in rows and columns, and each pixel unit 13 includes a photoelectric conversion element 132 . Similar to the existing thin film transistor pixel unit, each pixel unit 13 is disposed at the intersection of the corresponding scanning line and data line, and further includes a thin film electrically coupled to the corresponding scanning line and data line A transistor (not shown in the figure) and a pixel electrode (not shown in the figure) electrically connected to the thin film transistor. The photoelectric conversion element 132 can be but not limited to a photodiode and a phototransistor, which can selectively operate in one of a light sensing mode (sensing mode) and a solar cell mode (solar cell mode); The sensing mode is related to the touch panel function of the active matrix display device 10 ; when the photoelectric conversion element 132 operates in the solar battery mode, it is related to the solar battery function of the active matrix display device 10 . The photoelectric conversion element 132 can be constructed directly above the thin film transistor of the pixel unit 13 by using a semiconductor process, that is, the side of the thin film transistor away from the transparent substrate 11 . The photoelectric conversion element 132, such as a photodiode, is usually provided with an anti-reflection layer on its light-receiving surface. The anti-reflection layer can reduce the interference of external light on the screen of the active matrix display device 10, thereby increasing the sensitivity of the active matrix display device 10 to sunlight. under the readability.

The gate driving circuit 15 is electrically coupled to a plurality of scanning lines, and is used to provide scanning signals to each pixel unit 13 in the thin film transistor pixel array; the source driving circuit 17 is electrically coupled to a plurality of data lines, It is used to provide data signals to each pixel unit 13 in the thin film transistor pixel array; thus, the image display function can be realized through the cooperation of the gate driving circuit 15 and the source driving circuit 17 . The gate driving circuit 15 and the source driving circuit 17 have basically the same circuit structure as the gate driving circuit and the source driving circuit of the existing active matrix display device, and will not be repeated here.

A plurality of gate detection lines G1, G2, ..., Gm are electrically coupled to the gate detector 16, and a plurality of source detection lines S1, S2, ..., Sn are electrically coupled For the source detector 18 , the gate detection lines G1 , G2 , . . . , Gm and the source detection lines S1 , S2 , . The photoelectric conversion element 132 of each pixel unit 13 in the thin film transistor pixel array is arranged at the intersection of the gate detection lines G1, G2, ..., Gm and the source detection lines S1, S2, ..., Sn And electrically coupled to the corresponding gate detection line and source detection line. In this embodiment, the photoelectric conversion elements 132 are arranged in rows and columns to form a photoelectric conversion element array.

Please also refer to FIG. 2 , which is a functional block diagram of the gate detector and the source detector shown in FIG. 1 . The gate detector 16 includes a switch unit 162 , a current measurement unit 164 , a power management unit 166 and a communication unit 168 . The source detector 18 includes a switch unit 182 , a constant voltage unit 184 , a system ground unit 186 and a communication unit 188 .

The switch unit 162 is electrically coupled to the gate detection lines G1, G2, . The gate detection lines G1, G2, . . . , Gm have the same number. The switch unit 182 is electrically coupled to the source detection lines S1 , S2 , . . . , Sn, and includes a plurality of switch elements 1821 arranged in parallel (refer to FIG. 3 and FIG. 4 ). 3 is a circuit equivalent diagram of the active matrix display device shown in FIG. 1 performing the touch panel function, and FIG. 4 is a circuit equivalent diagram of the active matrix display device shown in FIG. 1 performing the solar cell function. ), the number of switch elements 1821 is consistent with the number of source detection lines S1, S2, . . . , Sn. The switch units 162 and 182 are controlled synchronously by the power management unit 166, wherein the switch unit 162 is directly electrically coupled to the power management unit 166, and the switch unit 182 is electrically coupled to the communication unit 168 and the power management unit 166. Another communication unit 188 electrically coupled between the communication unit 168 and the switch unit 182 is coupled to the power management unit 166 . It can be understood that the switch units 162 and 182 can also accept the synchronous control of the power management unit 166 through other suitable electrical coupling methods.

The current measurement unit 164 is electrically coupled to the switch unit 162, and is used to measure the gate detection lines G1, G2, . . . the current value; the constant voltage unit 184 is electrically coupled to the switch unit 182, and is used to send the source detection lines S1, S2, . . . Provide a certain voltage; and the system grounding unit 186 is electrically coupled to the switch unit 182 for connecting the source detection lines S1, S2, . . . , Sn is pulled to ground potential.

Please also refer to FIG. 3 , which shows an equivalent circuit schematic diagram of the active matrix display device 10 performing the touch panel function, so that the photoelectric conversion element 132 operates in the light sensing mode. When performing the touch panel function, the current measurement unit 164 and the constant voltage unit 184 can be enabled through the power management unit 166; the power management unit 166 synchronously controls the switching units 162 and 182 so that the switching elements 1621 and 1821 can be switched quickly During the process, the constant voltage unit 184 provides a certain voltage to the photoelectric conversion element 132 so that it is in reverse bias and operates in the light sensing mode, and the current measurement unit 164 is used to measure the gate detection lines G1, G2, ..., the current value on Gm. When a touch action is performed, the photoelectric conversion element 132 at the touch position will be shielded so that the photoelectric conversion element 132 at the touch position is not induced by light and no photocurrent will be generated, and the photoelectric conversion element 132 at other unshielded positions will receive light A photocurrent is generated by induction; thus, the current values on the grid detection lines G1, G2, . . . , Gm measured by the current measurement unit 164 will be different. The current touch position can be obtained by analyzing the measured current values on the gate detection lines G1, G2, . . . , Gm.

Please also refer to FIG. 4 , which shows an equivalent schematic diagram of a circuit in which the active matrix display device 10 performs the function of a solar cell, so that the photoelectric conversion element 132 operates in a solar cell mode. When performing the solar battery function, the current measurement unit 164 and the constant voltage unit 184 can be removed from the electric effect circuit through the control of the power management unit 166, and the system grounding unit 186 is electrically coupled through the switch unit 182. The switch elements 1621 and 1821 of the switch units 162 and 182 connected to the source detection lines S1, S2, . . . The generated voltage will be output through the gate detection lines G1, G2, . . . , Gm.

Please also refer to FIG. 5 , which is a functional block diagram of the power management unit shown in FIG. 2 . The power management unit 166 includes a switch controller 1661 , a data collection unit 1663 , a data analysis unit 1665 , a judgment unit 1666 , a boost unit 1667 and a charging management unit 1669 . The switch controller 1661 is used to generate control signals to synchronously control the switch unit 162 of the gate detector 16 and the switch unit 182 of the source detector 18, and control the current measurement unit 164, the constant voltage unit 184 and the system grounding unit 186 Enable or not. The data collection unit 1663 and the data analysis unit 1665 are used for performing touch panel functions, wherein the data collection unit 1663 is electrically coupled to the current measurement unit 164 , and the data analysis unit 1665 is electrically coupled to the data collection unit 1663 . The boost unit 1667 and the charge management unit 1669 are used for performing the function of the solar battery, wherein the boost unit 1667 is electrically coupled to the switch unit 162 , and the charge management unit 1669 is electrically coupled to the boost unit 1667 . The output terminal of the charging management unit 1669 is coupled to an energy storage element 19 (such as an energy storage capacitor) and a switching element SW connected to the connection point between the energy storage element 19 and the output terminal of the charging management unit 1669 .

When the active matrix display device 10 performs the touch panel function, the current value measured by the current measurement unit 164 is sent to the data collection unit 1663, and the data collection unit 1663 collects the grid detection lines G1, G2, . . . , the current value on Gm can obtain a current value matrix, and then the data analysis unit 1665 can analyze the current value of each position in the current value matrix to know the current touch position.

When the active matrix display device 10 performs the function of a solar cell, the voltage output by each grid detection line G1, G2, ..., Gm is transmitted to the boost unit 1667 through the switch unit 162, and when the voltage is lower than a predetermined value , the voltage boosting unit 1667 boosts the voltage so that the output voltage value of the boosting unit 1667 reaches a predetermined value and outputs it to the charging management unit 1669, and the charging management unit 1669 stores the energy in the energy storage element 19. When the energy on the energy storage element 19 is full, the switch controller 1661 controls the switch element SW to close to provide power supply to the back-end system power supply or the display drive system (such as MP3 player module).

The judging unit 1666 is electrically coupled with the data analyzing unit 1665, and is used to judge the touch state and the light-receiving condition of the photoelectric conversion element 132 of each pixel unit 13 in the thin film transistor pixel array, and switch the active matrix display device 10 according to the judging result. operation. In this example, the judging unit 1666 is integrated in the power management unit 166 ; of course, it can also be independent of the power management unit 166 . Please refer to shown in Fig. 6, it is a judgment flow chart of the judging unit shown in Fig. 5, it illustrates a kind of judgment flow chart of judging unit 1666 by way of example, specifically includes the following steps: after the flow process starts, execute step S10: judge whether there is photoelectric If the conversion element 132 is covered, if the judgment result is yes, it may indicate that a touch action has occurred, and step S12 is performed: judging whether it is single-point shielding or multi-point shielding. If it is single-point shading, switch the active matrix display device 10 to perform operation one, and if it is multi-point shading, switch the active matrix display device 10 to perform operation two. On the contrary, if the judgment result is no, then execute step S14: judge whether each photoelectric conversion element 132 receives light (that is, not shielded) for a predetermined length of time, if not, then switch the active matrix display device 10 to perform a sleep operation, if , the active matrix display device 10 is switched to perform the charging operation (that is, to perform the solar cell function). Furthermore, when the photoelectric conversion element 132 with a large area is suddenly blocked, the active matrix display device 10 can be switched to perform the false touch protection operation. Therefore, through the judgment of the judging unit 1666 , switching between the touch panel function and the solar battery function of the active matrix display device 10 and switching between other operations can be realized.

In summary, in the embodiment of the present utility model, through the structural design of the gate detector 16 and the source detector 18, the photoelectric conversion element 132 can be controlled to selectively operate in one of the light sensing mode and the solar cell mode. Therefore, the active matrix display device 10 with an optical touch panel can have dual functions of a touch panel and a solar cell, thereby increasing the added value of the product and realizing the purpose of saving energy.

In addition, the active matrix display device 10 with an optical touch panel in the embodiment of the present invention may be but not limited to a liquid crystal display device. Further, when the active matrix display device 10 with an optical touch panel is a reflective or transflective liquid crystal display device, its energy consumption is relatively low, so that energy self-sufficiency can basically be achieved. In addition, the positions of the gate detector 16 and the source detector 18 in the embodiment of the present invention can be exchanged, which can also achieve the purpose of the present invention.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those skilled in the art can use the technical content disclosed above to make some changes or modify them into equivalent embodiments without departing from the technical solution of the present utility model. Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. active matrix display device with optical touch control panel, it is characterized in that: it comprises:

One thin film transistor (TFT) pel array comprises a plurality of pixel cells, and each described pixel cell comprises a photo-electric conversion element;

One gate driver circuit is used for providing to described pixel cell scanning signal;

The one source pole driving circuit is used for providing data-signal to described pixel cell;

A plurality of first detection lines and a plurality of second detection lines, described first detection lines and second detection lines are arranged in a crossed manner, and described photo-electric conversion element is separately positioned on the crossover location of the first corresponding with it detection lines and second detection lines and is electrically coupled to described first detection lines and described second detection lines;

One first detector, comprise one first switch element, an one current measurement unit and a Power Management Unit, described first switch element is electrically coupled to described first detection lines, described Power Management Unit comprises that an on-off controller controls described first switch element so that described photo-electric conversion element optionally operates in one of a light sensing pattern and a solar-electricity pool mode in order to produce a control signal, and described current measurement unit is electrically coupled to described first switch element and operates at described photo-electric conversion element and is enabled under the light sensing pattern to measure the current value on described first detection lines by described first switch element; And

One second detector, comprise a second switch unit, a certain voltage unit and a system earth unit, described second switch unit is electrically coupled to described second detection lines and accepts the control of the described control signal that the described on-off controller of the described Power Management Unit of described first detector produces, describedly decide that voltage cell is electrically coupled to described second switch unit and operate at described photo-electric conversion element to be enabled under the described light sensing pattern to provide certain voltage by described second switch unit to described second detection lines, described system earth unit operates at described photo-electric conversion element and is enabled under the described solar-electricity pool mode to be electrically coupled to described second detection lines by described second switch unit.

2. the active matrix display device with optical touch control panel according to claim 1, it is characterized in that described Power Management Unit more comprises a boosting unit, described first switch element of electric property coupling, when described photo-electric conversion element operates under the described solar-electricity pool mode and described photo-electric conversion element comes by the transmission of described first switch element voltage is lower than a predetermined value, described voltage is carried out boost action.

3. the active matrix display device with optical touch control panel according to claim 2, it is characterized in that described active matrix display device also comprises an energy storage elements, described Power Management Unit comprises that more one is electrically coupled to the Charge Management unit between described boosting unit and described energy storage elements, in order to described energy storage elements is carried out management of charging and discharging.

4. the active matrix display device with optical touch control panel according to claim 3, it is characterized in that described active matrix display device more comprises an on-off element, described on-off element is electrically coupled to the tie point between described energy storage elements and the described Charge Management unit and accepts the control of described on-off controller and closure when the energy on described energy storage elements storage is full.

5. the active matrix display device with optical touch control panel according to claim 1 is characterized in that described Power Management Unit more comprises a data collection module and a data analysis unit; Described data collection module is electrically coupled to described current measurement unit, in order to collect the described current value that described current measurement unit measuring arrives; Described data analysis unit is electrically coupled to described data collection module, in order to analyze described current value that described data collection module collects to obtain current position of touch.

6. the active matrix display device with optical touch control panel according to claim 5, it is characterized in that described first detector more comprises a judging unit, be electrically coupled to described data analysis unit, in order to the touch-control state of judging described photo-electric conversion element and the operation that is subjected to the light situation and switches described active matrix display device according to judged result.

7. the active matrix display device with optical touch control panel according to claim 1, it is characterized in that described first detector more comprises one first communication unit, described first communication unit and described on-off controller electric property coupling, described second detector also comprises one second communication unit, and described second communication unit is electrically coupled between described first communication unit and the described second switch unit and transfers to described second switch unit with the described control signal that described on-off controller is produced.

8. the active matrix display device with optical touch control panel according to claim 1 is characterized in that described photo-electric conversion element is optical diode or optotransistor.

9. the active matrix display device with optical touch control panel according to claim 1 is characterized in that described active matrix display device is a liquid crystal indicator.

10. the active matrix display device with optical touch control panel according to claim 9 is characterized in that described liquid crystal indicator is reflective LCD device or semi-penetrating semi-reflecting type liquid crystal displaying device.

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