KR101071168B1 - Method and device for detecting touch input - Google Patents

Abstract

The present invention is to provide a touch input recognition method and apparatus that can recognize a GUI object that a user wants to input even when a plurality of adjacent GUI objects are touched together. The touch input recognition method of the present invention comprises the steps of: (a) receiving a coordinate value of the touch cell 60 is touch; (b) extracting the GUI object 210 selected by the touch input by reading touch coordinates corresponding to the coordinates of the GUI object 210; (c) determining whether a plurality of adjacent GUI objects 210 are selected; And (d) if a plurality of adjacent GUI objects 210 are selected in step (c), a touch input for the GUI object 210 having the largest capacitor size detected in the touch cell 60 is used as a valid input signal. Recognizing step; configured to include. According to the present invention, even when the user touches a plurality of GUI objects at the same time with a finger, the user can accurately recognize the GUI object that the user wants to touch input, even if a plurality of GUI objects are touched at the same time, malfunction or misrecognition occurs Does not have the effect.

Description

Method and device for detecting touch input

The present invention relates to a touch input recognition method and apparatus, and more particularly, to a touch input recognition method and apparatus capable of recognizing a GUI object desired by a user even when a plurality of adjacent GUI objects are touched together.

The touch panel is attached to a display device such as an LCD, and is an input device that generates a signal corresponding thereto at a contact position when an object such as a finger or a pen contacts.

The touch panel may be divided into a resistive type and a capacitive type according to a driving method. The resistive touch panel is a touch panel that detects contact of the conductive layers of the upper and lower substrates with a change in resistance value when an object such as a pen contacts the upper surface of the touch panel. A capacitive type is a touch panel that detects the approach of a finger or a touch means having similar conductivity characteristics using capacitance. In addition, various types of touch panels, such as optical and ultrasonic, are disclosed. Recently, a multi-touch technology for recognizing a plurality of touch points and a technology for embedding a touch input device in a display device have been developed.

A touch input recognition device, such as a touch input device additionally installed in the display device or a display device with a built-in touch input device, should have various touch input interfaces. In particular, the touch input recognizing apparatus must recognize a touch input corresponding to a graphical user interface (GUI) object. For example, when a GUI object such as an icon displayed on a GUI, a key object of a keyboard, or a text is touched by a user on a display of a display device, the touch input recognition device must accurately select or activate a GUI object input by the user. do.

Conventional resistive touch panels support stylus pen inputs, but the user often does not use the stylus pen or the stylus pen is lost. Conventional capacitive touch panels do not detect narrow cross-sectional areas such as stylus pens. As such, when a GUI object is selected by a finger without using a stylus pen, a contact area of a finger is generally larger than a GUI object, and a plurality of adjacent GUI objects are simultaneously touched.

However, when a plurality of GUI objects are touched at the same time as described above, the conventional touch input recognition device has a problem of not correctly recognizing a GUI object desired by the user or malfunctioning.

The present invention has been proposed to solve the above problems, and when a plurality of adjacent GUI objects are touched together, the user can select a desired GUI object by recognizing the GUI object with the largest area input as a valid input. It is an object of the present invention to provide a method and apparatus for recognizing a touch input.

The touch input recognition method of the present invention for achieving the above object is provided with a capacitive touch input device 100 or a capacitive touch input device 100 in which a plurality of touch cells 60 are arranged in a matrix form. A touch input recognition method for recognizing a touch input in a display device 200, the method comprising: (a) receiving coordinate values of a touch cell 60 in which a touch is made; (b) extracting the GUI object 210 selected by the touch input by reading touch coordinates corresponding to the coordinates of the GUI object 210; (c) determining whether a plurality of adjacent GUI objects 210 are selected; And (d) if a plurality of adjacent GUI objects 210 are selected in step (c), a touch input for the GUI object 210 having the largest capacitor size detected in the touch cell 60 is used as a valid input signal. Recognizing; includes.

In one embodiment, if the same size of the capacitor of the touch cell 60 is detected for two or more adjacent GUI object 210 in the step (d), the other GUI object 210 for each of the GUI object (210) In comparison with the above, the touch input to the GUI object 210 having a high predetermined priority is recognized as a valid input signal.

In one embodiment, the priority is determined by the frequency of use of the GUI object 210.

In another embodiment, the priority is determined by the positional relationship of the GUI object 210.

In one embodiment, the touch cell 60 is a three-terminal signal detection switching device for detecting a signal from the conductive pad 50 and the gate terminal is connected to the conductive pad 50 is formed in the conductive pad partitioned; (44).

In one embodiment, the touch cell 60 further includes a three-terminal charge signal switching device 42 for switching and applying a charging signal to the conductive pad 50.

In one embodiment, the signal detection switching element 44 and the charge signal switching element 42 is a thin film transistor (TFT).

In one embodiment, the signal detection switching element 44 and the charge signal switching element 42 is provided in the invisible region (110).

The touch input recognition device of the present invention for achieving the above object is provided with a capacitive touch input device 100 or a capacitive touch input device 100 in which a plurality of touch cells 60 are arranged in a matrix form. A touch input recognition device such as a display device 200, comprising: a touch coordinate receiver 82 for receiving touch coordinates from each touch cell 60 when a touch input is generated on the touch cell 60; An input selector 84 that reads touch coordinates corresponding to the coordinates of the GUI object 210 and extracts the GUI object 210 selected by the touch input; And a valid input selector 86 that recognizes a touch input to the GUI object 210 having the largest size of the capacitor detected by the touch cell 60 as a valid input signal when a plurality of adjacent GUI objects 210 are selected. It is configured to include.

In an embodiment, the apparatus further includes a touch controller 80 that sequentially drives the touch cells 60 along the column direction or the row direction and detects a touch input from each touch cell 60.

In one embodiment, the touch cell 60 is a three-terminal signal detection for detecting a signal from the conductive pad 50 and a gate terminal connected to the conductive pad 50 and the conductive pad 50 are partitioned. For switching device 44.

In one embodiment, the touch cell 60 further includes a three-terminal charge signal switching device 42 for switching and applying a charging signal to the conductive pad 50.

In one embodiment, the signal detection switching element 44 and the charge signal switching element 42 is a thin film transistor (TFT).

In one embodiment, the signal detection switching element 44 and the charge signal switching element 42 is provided in the invisible region (110).

According to the touch input recognition method and apparatus of the present invention, by reading the touch coordinates of the touch cells corresponding to the coordinates of the GUI object to extract the GUI object selected by the touch, when a plurality of adjacent GUI objects are selected By effectively recognizing touch input for the largest GUI object, even when a user selects a plurality of GUI objects at the same time with a finger or the like, no misrecognition or malfunction occurs and the user correctly selects the GUI object to be touched. It can be effective.

In addition, according to the present invention, if the size of the capacitor of each adjacent GUI object is the same, it is not recognized as an error, it is effective to improve the user convenience by selecting the GUI object according to the priority, such as frequency of use or positional relationship. .

1 is a block diagram showing an example of a touch input recognition device according to the present invention;
2 is a block diagram showing another example of a touch input recognition device according to the present invention;
3 is a flowchart showing a touch input recognition method according to the present invention.
4 is a plan view for explaining a touch input recognition method according to the present invention.
5 is a plan view illustrating an arrangement of touch cells corresponding to GUI objects;
6 conceptually depicts an example of capacitance formation between a body and a conductive pad;
7 is a circuit diagram illustrating an example of a capacitive touch panel;
8 is a circuit diagram illustrating another example of a capacitive touch panel;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

Before describing an embodiment, some important terms are defined.

The term “touch input recognition device” refers to a known touch input device or a display device in which a touch input device is embedded.

The "touch input device" is an input device that replaces a keyboard or a mouse. When a touch input occurs by a stylus pen or a human finger, the "touch input device" is a device that recognizes the input signal.

The "display device with a built-in touch input device" is a display device in which the above "touch input device" is integrated in the display device. For example, electrodes for sensing a touch may be formed on a color filter or an array substrate (or “TFT substrate”) of an LCD. In addition, the LCD with a touch input device may be integrated into an LCD drive IC in which the touch drive IC controls an image display of the LCD. In addition, a main CPU such as a mobile terminal may directly process a touch input signal. These devices will be referred to as touch input recognition devices.

"GUI object" means an object that is displayed on an image by a Graphic User Interface. For example, the GUI object includes an object such as a key object of the keyboard, an execution icon, text, an input button, and the like. In the present specification, "GUI object" means a unit graphic image which can be touch input by a user.

The method and apparatus for recognizing touch input according to the present invention are related to a method and apparatus for accurately selecting a GUI object that a user wants to input when a plurality of GUI objects are simultaneously touched. Hereinafter, some capacitive touch input devices will be illustrated to help understanding of the present invention. However, the technical idea of the present invention is not limited to the embodiments described below, but may be applied to other types of capacitive touch input devices.

In the drawings, thicknesses or regions are enlarged in order to clearly express various layers and regions. The same reference numerals are used for similar parts throughout the specification. When a portion of a layer, region, substrate, etc. is said to be "on" or "top" another portion, this includes not only the case where the other portion is "directly above" but also another portion in the middle. On the contrary, when a part is "just above" another part, there is no other part in the middle.

In the embodiments described below, the switching element may be replaced with "TFT", and the same reference numerals will be used for the switching element and the TFT.

1 and 2 are block diagrams schematically illustrating a touch input recognition device according to the present invention. 1 illustrates a touch input device, and FIG. 2 illustrates a display device with a built-in touch input device.

Referring to FIG. 1, the touch input device 100 includes a touch panel 100a and a touch signal processor 100b for processing a touch signal. The touch panel 100a includes an active area 105 for sensing a touch input. The active region 105 is divided into a plurality, and each of the divided regions forms the touch cell 60. Preferably, the touch cells 60 are arranged in a matrix form in the active region 105. As an example, the touch panel 100a is made of a light transmissive material and mounted on a display device (not shown). In this case, the active region 105 of the touch panel 100a is positioned to correspond to the active region of the display device. The active region 105 has an appropriate transmittance so that the display device can be seen, and an invisible region 110 is formed around the active region 105. As another example, the touch panel 100a may be configured as a separate input means that is not placed on the display device such as a touch pad of a notebook.

As shown in FIG. 2, the display device 200 may include a touch input device. For example, the touch panel may be internalized in the LCD such that the touch panel 100a is installed between the color filter and the polarizing plate of the LCD or on the upper portion of the polarizing plate. Alternatively, the touch panel 100a may be integrated with the array substrate or the color filter of the LCD. In this case, the active region 105 of the touch panel 100a is positioned to correspond to the active region of the display device.

The touch input recognition device may be provided in various forms as shown in FIGS. 1 and 2.

The touch signal processor 100b includes a touch controller 80, a touch coordinate receiver 82, an input selector 84, and an effective input selector 86. Configurations such as "parts" are components that perform certain roles, and mean software components or hardware components such as a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC). However, "~ part" is not meant to be limited to software or hardware. For example, " ~ " may be configured in an addressable storage medium or may be configured to play one or more processors. As an example, "~ part" may include certain processes, functions, properties, subroutines, segments of program code, firmware, microcode, database, variables. Further, "~ part" may be included in a larger component or "~ part" or may include smaller components and "~ part". Also, "~ part" may have its own CPU.

The touch controller 80 provides an operation signal to each of the touch cells 60 and detects whether a touch input is generated from each touch cell 60. The operation signal and the detection signal may be an electrical signal such as a voltage or a current, or some other type of signal. The touch controller 80 may be provided in the form of a drive integrated circuit (IC) or an ASIC, and may include additional circuit components.

As an example, the touch controller 80 scan-drives the touch cells 60 having a matrix form in a column direction or a row direction. Then, a predetermined signal is received from the touch cells 60 in a direction crossing the scan driving direction depending on whether a touch input is generated. In this manner, signals from each touch cell 60 can be detected independently. The operation of the touch controller 80 will be described in detail with reference to some examples below.

The touch coordinate receiver 82, the input selector 84, and the effective input selector 86 are main components for recognizing a valid touch input according to the present invention. These components may be an embedded MCU (Micro Control Unit) embedded in the touch controller 80 or an external MCU installed outside of the touch controller 80. Or it may be included in the CPU of the terminal supporting a mobile phone or other touch interface, or may be separately installed in these terminals.

The role and action relationship of the above components will be described with reference to the flowchart of FIG. 3.

3 is a schematic view of a touch input recognition method according to the present invention, which shows a process of searching for a GUI object 210 that is validly input when a plurality of GUI objects 210 are touch input.

The process starts from the step ST100 in which the touch coordinate receiving unit 82 receives the touch coordinates from the touch controller 80 (ST100). The touch controller 80 sends the touch coordinates to the touch coordinate receiving unit 82 after a single scan is completed or the predetermined number of scans is filled over the entire active area 105.

Next, the input selector 84 reads the received touch coordinates and extracts the GUI object 210 in which the touch input has occurred (ST110). To this end, the input selector 84 reads the coordinates of the GUI object 210 from the display screen controller 90 such as an LCD controller. For example, the input selector 84 maps coordinates and touch coordinates of the GUI object 210, and touch coordinates identical to the coordinates of the GUI object 210 or touch coordinates included in the coordinate region of the GUI object 210. Read and extract the touch input GUI object 210.

Next, the valid input selector 86 determines whether a plurality of adjacent GUI objects 210 are selected by touch (ST120). If a plurality of adjacent GUI objects 210 are not selected, the GUI objects 210 extracted by the input selector 84 are effectively processed (ST130).

In general, in the case of touch input of a distant icon or the like, a plurality of adjacent icons are rarely selected at the same time. Therefore, it is easy to extract the GUI object 210 selected by the touch input.

However, as shown in FIG. 4, when the QWERTY keyboard is selected as a touch input, the surrounding GUI objects 210 are simultaneously touched even when the user wants to select only one GUI object 210 with a finger 25. This happens. In order to prevent this, the GUI object 210 may be set very large, or sufficient space may be provided between the GUI objects 210. However, in this case, it will be difficult to arrange the full key on the screen of the small mobile terminal.

Referring to FIG. 5, one touch cell 60 may be allocated to each GUI object 210. If a touch input as shown in FIG. 4 occurs, the keys of “5”, “R”, “T”, “D”, “F”, and “G” will be simultaneously touched as shown in FIG. 5. At this time, the person instinctively makes a touch around the GUI object 210 that he or she wishes to input. Therefore, when trying to input "r" of "sir" in FIG. 4, the largest area of the finger is allocated to the "R" key as in FIG. 5.

Referring back to the flowchart of FIG. 3, when the valid input selector 86 determines that a plurality of adjacent GUI objects 210 are selected in step ST120, the valid input selector 86 is a capacitor of the touch cell 60. Recognizes the largest GUI object 210 as valid input (ST140). In the example shown, since the largest area of the finger 25 is opposite the GUI object "R", the capacitor size at "R" will be the largest. Therefore, the valid input selector 86 processes "R" as a valid input signal, and the touch input to the rest of the capacitor is invalid. A method of calculating the size of the capacitor in each touch cell 60 will be described later with reference to FIGS. 7 and 8.

Meanwhile, the valid input selector 86 may recognize that the same touch coordinate is input to two or more adjacent GUI objects 210. For example, suppose that capacitors of the same size are detected corresponding to "R" and "T" in FIG. 5.

In the above case, there are various ways to solve the problem.

First, sampling the touch detection signal several times. Normally, it is extremely rare for a person to keep a completely stationary state while touching a finger 25. In addition, the touch controller 80 reports a touch detection signal at about 100 frames per second. Accordingly, when data of approximately 5 to 10 frames is sampled, the GUI object 210 in which the size of the capacitor is detected can be selected. If the same capacitor size is detected for "R" and "T" even when data of 5 frames is sampled, all touch inputs may be invalidated while processing the frames.

Second, priority is given to the GUI object 210. The priority may be given based on the frequency of use or location relationship of the GUI object 210. For example, if "R" is used more frequently than "T" and such information is stored in the memory, the valid input selector 86 refers to the memory and inputs "R" in a valid input when the above assumption occurs. Will be able to handle As another example, if we give priority to the GUI object 210 located on the left, we can treat "R" as a valid input in the above assumption.

Hereinafter, a method of calculating the size of a capacitor in each touch cell 60 will be described by illustrating the configuration of the touch panel 100a. Here, some examples of the touch panel will be described with reference to the inventor's prior patents in order to facilitate understanding of the present invention. However, examples of the touch panel described below are not intended to limit the technical spirit of the present invention, but are merely to help understanding.

6 is a diagram conceptually illustrating an example of capacitance formation between the body and the conductive pad. Referring to FIG. 6, when the finger 25, or similar conductive touch means, approaches the conductive pad 50, the conductive pad 50 and the finger 25 are spaced at an interval of “d”, and “ Suppose we have an opposing area called A ". Then, a capacitance "C" is formed between the finger 25 and the conductive pad 50 as shown in the right equivalent circuit and equation of FIG. When a charge having a magnitude of charge amount "Q" is accumulated by supplying a signal of voltage or current to the conductive pad 50 having capacitance "C", a voltage relation equation of V = Q / C is formed. At this time, the body is virtually grounded with respect to the earth.

If a predetermined signal is applied to the conductive pad 50 in a state where the finger 25 is opposed to the conductive pad 50 at a distance d, a charge is applied to the capacitance C formed between the conductive pad 50 and the finger 25. Is charged. At this time, since the gate terminal of the signal detection switching element 44 (preferably TFT) is connected to the conductive pad 50 as shown in the drawing, the conductive pad 50 accumulates at the time when the charge is charged and the capacitance C. The signal detection TFT 44 is turned on for an arbitrary time when the signal is discharged. The magnitude of the discharged signal gradually decreases with time, and when discharged to some extent, the signal detection TFT 44 is turned off.

7 and 8 show a circuit configuration of the touch panel using the above principle. 7 and 8 are views taken from the inventors prior patent registration KR 10-0935403. Portions which are not described below may be referred to in the above patents.

Referring to FIG. 7, the unit touch cell 60 is composed of a conductive pad 50 isolated from the periphery and a signal detecting TFT 44 having a gate terminal connected to the conductive pad 50. The touch controller 80 scans and supplies a charging signal to the conductive pads 50 of each touch cell 60 through the charging signal supply line 32. An auxiliary signal line 37 and a touch signal detection line 34 are connected to the input and output terminals of the signal detection TFT 44, respectively. The touch controller 80 applies a charging signal through the charging signal supply line 32, applies an observation signal to the auxiliary signal line 37, and receives a touch detection signal from the touch signal detection line 34.

While the charging signal is applied, the signal detecting TFT 44 remains turned on under certain conditions (such as a voltage condition between Auxn and Sn applied to the input / output terminals of the signal detecting TFT 44, respectively).

If the touch input does not occur, the gate terminal potential of the signal detecting TFT 44 drops rapidly when the charging signal is turned off. The influence of parasitic capacitance is negligible here. In this manner, after the gate terminal potential of the signal detecting TFT 44 falls, no signal is received by the touch signal detection line 34 even when a predetermined signal is applied through the auxiliary signal line 37.

If a touch input occurs, a virtual capacitor will be formed between the finger 25 and the conductive pad 50 as shown in FIG. 6. And this virtual capacitor will be charged by the charging signal. Then, when the charge signal is turned off and the conductive pad 50 is isolated, the signal detection TFT 44 is kept on for a while by the charge charged in the virtual capacitor. This phenomenon persists until the touch input is released, the virtual capacitor is forcibly discharged, or the virtual capacitor is discharged to some extent by leakage or free discharge. Therefore, the non-contact touch input of the body can be detected.

For example, if the S3 signal is received when the charging signal D3 is turned on, the touch controller 80 generates the "D3, S3" coordinate signals. The signal is transmitted to the touch coordinate receiving unit 82.

8 illustrates an example of safely blocking a charging signal and enabling multi-touch recognition without limit on the number of points. Referring to FIG. 8, it can be seen that each touch cell 60 further includes a charging signal switching device 42 as compared with the embodiment of FIG. 7. The charging signal switching element 42 is also preferably a TFT.

The input terminal of the charging signal TFT 42 is connected to the charging signal supply line 32 and the output terminal is connected to the conductive pad 50. The touch controller 80 supplies an on / off control signal to the gate terminal of the charging signal TFT 42 through the gate signal line 36.

The touch controller 80 sequentially scans and drives the gate signal Gn. The charging signal Dn is supplied simultaneously to the entire touch cell 60 or in synchronization with the gate signal Gn. In the latter case, the charging signal supply line 32 is preferably arranged in parallel with the gate signal line 36 unlike the embodiment of FIG. 8.

By adding the charge signal TFT 42 in this manner, it is possible to stably switch supply and cut off the charge signal. Therefore, when a touch input occurs, the signal from the conductive pad 50 can be reliably isolated. Compared to the embodiment of FIG. 7, the touch signal is more stable in processing, and the multi-touch can be easily recognized.

In the embodiment of FIG. 8, when the S3 signal is received at the time when the gate signal G3 is applied, the touch controller 80 generates a touch input signal having coordinate information of "D3 and S3". The signal is transmitted to the touch coordinate receiving unit 82.

7 and 8 may detect whether a virtual capacitor is generated and a size between the finger 25 and the conductive pad 50 by using the signal detecting TFT 44. The detection method is performed by observing a waveform of Sn, detecting a current flowing through an input / output terminal of the signal detecting TFT 44, or detecting a potential difference applied between the gate terminal and the output terminal.

7 and 8, the size of the virtual capacitor induced in each touch cell 60 is determined by the opposing area of the conductive pad 50 and the finger 25 of the body. And we can know the size of the virtual capacitor in each touch cell 60 by using the above methods. That is, from the signal observed through the signal detecting TFT 44, it can be known how much area the finger 25 covers the touch cell 60.

Accordingly, the valid input selector 86 may select the valid input by calculating and comparing the size of the capacitor in each touch cell 60 with respect to two or more adjacent GUI objects 210.

Although not mentioned in the previous embodiment, the conductive pad 50 is coated with a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), antimony tin oxide (ATO), and carbon nanotubes (Carbon Nano Tube). Is formed. In addition, the conductive pad 50 is formed to have the largest area possible in the touch cell 60. As the area of the conductive pad 50 is wider, the virtual capacitance formed between the finger 25 and the conductive pad 50 is increased, so that the touch signal can be more stably obtained.

On the other hand, a light shielding layer for blocking light may be provided on the top surface of the charging signal TFT 42 and the signal detection TFT 44. The light shielding layer may be formed of a metal used for manufacturing a source electrode or a drain electrode of a TFT, a metal used for manufacturing a gate electrode, or an impermeable insulating film. The impermeable insulating film may be formed of an oxide film, a nitride film, an insulating polysilicon film, or the like. This light shielding layer prevents the TFT from malfunctioning in response to light.

Further, the charging signal TFT 42 and the signal detecting TFT 44 can be visually recognized by the user as formed of a plurality of metal layers. In order to prevent the TFTs from being visually recognized by the user, the TFTs may be provided in the invisible region 110 of the touch panel 100a. 7 and 8 merely illustrate a circuit configuration of the touch cell 60, and TFTs constituting each touch cell 60 may be physically integrated in the invisible region 110. . As such, when the TFTs are installed in the invisible region 110, the light shielding layer may not be necessary.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the technical field of the present invention without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

25: finger 32: charging signal supply line
34: touch signal detection line 36: gate signal line
37: auxiliary signal line 42: charging signal switching element
44: switching element for signal detection 50: conductive pad
60: touch cell 80: touch controller
82: touch coordinate receiving unit 84: input selection unit
86: valid input selector 90: display screen control
100: touch input device 105: active area
110: invisible region 200: display device
210: GUI object

Claims (14)

In the touch input recognition method for recognizing touch input in the capacitive touch input device 100 having a plurality of touch cells 60 arranged in a matrix form or the display device 200 having such a capacitive touch input device 100. In
(a) receiving coordinate values of the touch cell 60 in which the touch is made;
(b) extracting the GUI object 210 selected by the touch input by reading touch coordinates corresponding to the coordinates of the GUI object 210;
(c) determining whether a plurality of adjacent GUI objects 210 are selected; And
(d) If a plurality of adjacent GUI objects 210 are selected in step (c), the touch input to the GUI object 210 having the largest capacitor size detected in the touch cell 60 is recognized as a valid input signal. Touch input recognition method comprising a.
The method of claim 1,
If the same size of the capacitor of the touch cell 60 is detected with respect to two or more adjacent GUI objects 210 in step (d), the GUI objects 210 are determined in advance in comparison with other GUI objects 210. Touch input recognition method, characterized in that to recognize the touch input to the GUI object 210 having a high priority as a valid input signal.
The method of claim 2,
The priority is a touch input recognition method, characterized in that determined by the frequency of use of the GUI object (210).
The method of claim 2,
The priority is a touch input recognition method, characterized in that determined by the positional relationship of the GUI object (210).
The method of claim 1,
The touch cell 60 includes a conductive pad 50 that is partitioned and a three-terminal signal detection switching element 44 for connecting a gate terminal to the conductive pad 50 and detecting a signal from the conductive pad. Touch input recognition method, characterized in that.
6. The method of claim 5,
The touch cell (60) further comprises a three-terminal charge signal switching device (42) for switching the charging signal applied to the conductive pad (50).
The method of claim 6,
The signal detection switching device 44 and the charging signal switching device 42 are thin film transistors (TFTs).
The method of claim 7, wherein
The signal detection switching element 44 and the charging signal switching element 42 are installed in the invisible region 110, characterized in that the touch input recognition method.
In a touch input recognition device such as a capacitive touch input device 100 in which a plurality of touch cells 60 are arranged in a matrix form or a display device 200 having such a capacitive touch input device 100,
A touch coordinate receiver 82 for receiving touch coordinates from each of the touch cells 60 when a touch input occurs to the touch cell 60;
An input selector 84 that reads touch coordinates corresponding to the coordinates of the GUI object 210 and extracts the GUI object 210 selected by the touch input; And
When a plurality of adjacent GUI objects 210 are selected, the valid input selector 86 that recognizes a touch input to the GUI object 210 having the largest size of the capacitor detected by the touch cell 60 as a valid input signal. Touch input recognition device, characterized in that configured to include.
The method of claim 9,
And a touch controller (80) for sequentially driving the touch cells (60) in a column direction or a row direction and detecting a touch input from each touch cell (60).
The method of claim 9,
The touch cell 60 is a three-terminal signal detection switching element 44 for detecting a signal from the conductive pad 50 and a gate terminal connected to the conductive pad 50 and the conductive pad 50. Touch input recognition device comprising a).
12. The method of claim 11,
The touch cell (60) further comprises a three-terminal charge signal switching device (42) for switching and applying a charging signal to the conductive pad (50).
The method of claim 12,
The signal detection switching device 44 and the charging signal switching device 42 are thin film transistors (TFTs).
The method of claim 13,
The signal detection switching element 44 and the charging signal switching element 42 are installed in the invisible region 110, characterized in that the touch input recognition device.

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