KR20100039012A

KR20100039012A - Display device with touch sensor and method of controlling the same

Info

Publication number: KR20100039012A
Application number: KR1020080098208A
Authority: KR
Inventors: 이재일
Original assignee: 엘지전자 주식회사
Priority date: 2008-10-07
Filing date: 2008-10-07
Publication date: 2010-04-15

Abstract

According to one or more exemplary embodiments, a display device including a touch sensor may include: a touch keypad configured to display images corresponding to various menu buttons; A touch sensor unit sensing a user input applied to the touch keypad; A first control unit which checks and outputs information of a specific menu button input from a user according to an input detection signal of the touch sensor unit; And a second control unit determining whether a specific menu button outputted through the first control unit is valid according to a system operation state, and accordingly distinguishing and displaying a valid menu button and an invalid menu button on the touch keypad. It is configured by.

Description

Display device with touch sensor and control method thereof {Display device with touch sensor and method of controlling the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device equipped with a touch sensor, and more particularly, to a display device equipped with a touch sensor capable of automatically locking unnecessary keys according to a current operating state and guiding input of a valid key. It is about a method.

In general, the display device has a separate local key input unit for receiving a user's request command.

However, when used in a dark environment due to the characteristics of a product called a display device, it is difficult to determine the location where a predetermined key is disposed.

Therefore, recently, a menu for receiving a user's request command is displayed on a display panel according to a user's request by using a touch screen, and accordingly, a specific menu selected by the user is recognized to perform a corresponding function.

That is, in the method of controlling the display apparatus, a corresponding function may be performed according to a general key button operation, or a menu in the form of an icon for inputting a key button is displayed on the touch screen of the display apparatus having a touch sensor. Recognizes the coordinate value of the specific position touched so that the function corresponding to the coordinate is performed.

In addition, recently, a video device equipped with the touch sensor, such as a portable information terminal device, is provided with a PMP, PDA, MP3 player, etc. A menu icon is displayed on the touch screen to easily execute a predetermined function.

That is, when the user touches any one menu icon, the display device detects this and accesses and executes the corresponding program.

The principle of the operation of the touch sensor is various, but the most representative case is to install a string of sensors in response to the pressure applied to the surface of the screen closely, if the pressure is applied, the position where the pressure is applied to the coordinates to determine the corresponding operation There is a pressure sensitive manner to carry out. In addition, although this method is most used, there is a disadvantage in that the accuracy is somewhat lower.

On the other hand, the method developed to increase the precision on the screen charges the electric charge (flow of current) on the screen surface, installs sensors around it, and detects the loss of electric charge at the time of contact to determine the location of the contact. There is a way. This method is called a capacitive method, and the capacitive method has a disadvantage in that the unit cost of the product is relatively higher than that of the conventional pressure sensitive method.

Finally, there is a method using a resistive touch screen panel.

Since the resistive touch screen panel is electrically conductive and is stacked in a resistive thin metallic layer, the resistive touch screen panel is watched for a contact causing a current change and sent to a controller for processing.

The resistive touch screen panel has a relatively low price but only 75% of transparency, which makes it difficult to apply to a large panel, and the coated layer may be damaged due to a sharp object. The panel is in the same position.

In addition, the best advantage of the resistive touch screen panel is not influenced by external factors such as dust and water, and thus is widely spread to the general home and consumers.

In an embodiment of the present invention, a user may input a desired menu button more efficiently on a touch keypad.

In addition, according to an embodiment of the present invention, it is possible to prevent a malfunction due to unnecessary input of a key according to a current operation state of the display apparatus.

In addition, according to an exemplary embodiment of the present invention, only a backlight for a valid key is activated according to a current operating state of the display apparatus, so that the user can be notified of the location of the valid key.

In addition, the control method of the display device with a touch sensor according to an embodiment of the present invention comprises the steps of sensing a user input applied to the touch key pad is displayed a variety of menu buttons; Determining a validity of a specific menu button on which the input is detected according to a current system state; Classifying a valid menu button and an invalid menu button according to a current system operation state according to whether the specific menu button is valid; And separately displaying the valid menu button and the invalid menu button.

According to an exemplary embodiment of the present invention, a display apparatus having a touch sensor and a method of controlling the same may prevent an unnecessary operation of the display apparatus by locking an invalid key, that is, an unnecessary key, according to an operation state of the display apparatus, and also a valid key. By activating only the backlight to inform the user of the location of a valid key, the user's convenience can be maximized.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

The term used in the present invention is selected as a general term widely used as possible at present, but in certain cases there is also a term arbitrarily selected by the applicant, in which case the meaning is described in detail in the description of the invention, the name of a simple term It should be clear that the present invention is to be understood as a meaning of terms.

1 is a view showing the configuration of a display device having a touch sensor according to an embodiment of the present invention, Figure 2 is a view showing a general touch keypad according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention FIG. 4 is a diagram illustrating an example of touch keypads divided according to an embodiment of the present disclosure, and FIG. 4 is a diagram illustrating another example of touch keypads divided according to an embodiment of the present disclosure, and FIG. It is a flowchart for explaining step by step the control method of the display device provided.

As shown in FIG. 1, a display device having a touch sensor according to an embodiment of the present invention includes a touch keypad 10 in which images of various menu buttons are displayed, and a specific menu button applied to the touch keypad 10. A touch sensor unit 20 for detecting an input of the first sensor, a first controller 30 for checking and outputting information of a specific menu button input from a user according to an input detection signal of the touch sensor unit 20, and a system operation It is determined whether a particular menu button outputted through the first control unit 30 is valid according to a state, and accordingly, a second menu for distinguishing and displaying a valid menu button and an invalid menu button on the touch keypad 10 respectively. A control unit 40, a light source unit 50 disposed corresponding to the number of the various menu buttons to supply light to the front of the touch keypad, and a power supply unit 60 to supply driving power to the light source unit 50. It is configured to include.

Referring to the operation of the display device having a touch sensor according to an embodiment of the present invention configured as described above are as follows.

Images corresponding to various menu buttons are displayed on the touch keypad 10, and accordingly, a user may input a command for performing a corresponding function operation by checking a location of a desired menu button.

Here, as shown in FIG. 2, the various menu buttons include a menu entry button 11, an enter button 12, a source selection button 13, an automatic adjustment button 14, a power button 15, and a menu. There is a move button 16 (v, v, <,>, O). In addition, the menu button described above shows an example for description of the present invention, which may be further increased or decreased depending on the embodiment.

The menu entry button 11 is used to call a menu screen for setting a menu of a display device. The source selection button 13 is used to select an input signal when switching an input mode, and the power button 15 Is used to control the power on / off.

The touch sensor unit 20 senses a user input applied to various menu buttons displayed on the touch keypad 10.

Here, the touch sensor unit 20 is preferably configured of a resistance type. Of course, the touch sensor unit 20 may be configured using a capacitive type, a pressure sensitive type and an infrared type.

The first control unit 30 is generally called a sub micom, and when an input detection signal of a specific menu button is output through the touch sensor unit 20, the first control unit 30 is input from a user according to the output input detection signal. Confirm the information of the specific menu button, and output the information of the identified specific menu button.

The second control unit 40 receives the information of the input menu button transmitted from the first control unit 30, and accordingly checks the current system operation state to determine whether the input menu button is a valid menu button or an invalid menu button. Judge.

Here, the current system operating state means whether the corresponding display device is in a standby mode or an operating mode.

Menu button Operating status Standby mode Operation mode POWER available available Menu navigation buttons (∧, ∨, <,>, O) Invalid available MENU Invalid available ENTER Invalid available SOURCE Invalid available AUTO Invalid available

Accordingly, as shown in Table 1, when the current system operation state is the standby mode, only the POWER button is a valid input button, and the remaining buttons other than the above become invalid buttons.

In addition, even in the operation mode, the menu button is divided into a valid button and an invalid button according to an input of a specific menu button, which will be described later.

If the input menu button is a valid key, the second control unit 40 controls to perform a function operation corresponding to the input menu button.

In addition, when the input menu button is an invalid key, the second controller 40 prohibits the operation of a function corresponding to the input menu button, and according to the current system operation state on the touch keypad 10. The valid menu button and the invalid menu button are displayed separately.

That is, when the current system operation state is the standby mode, the second controller 40 classifies the power button and the remaining buttons, and the classified power button and the remaining buttons other than the above are respectively displayed on the touch keypad. Make sure to display them separately.

Here, the display is divided by the light source unit 50 provided on the back of the touch keypad.

That is, the back surface of the touch keypad 10 is provided with a light source unit 50 for emitting light on the front of the touch keypad.

In addition, the light source unit 50 is configured to correspond to the number of various menu buttons displayed on the touch keypad 10.

In other words, when the number of the menu button is 10, 10 light source parts should be provided. When the number of the menu button is 15, 15 light source parts should be provided.

In addition, each light source unit is disposed to correspond to the display position of each menu button, which is preferably composed of a chip LED.

Accordingly, the second controller 40 activates only the light source unit corresponding to the power button so as to distinguish and display the valid menu button and the invalid menu button, and deactivates the light source unit corresponding to the remaining menu buttons.

That is, FIG. 2 illustrates a state in which all the menu buttons of the touch keypad 10 are activated. When the current system operation state is the standby mode, only the light source unit corresponding to the POWER 15 button is activated. The light source units corresponding to the buttons 11, 12, 13, 14, 16 are inactivated.

Here, the activation and deactivation of the light source unit is made by supplying and blocking driving power supplied through the power supply unit 60.

In order to implement this, a switching unit (not shown) for switching the supplied driving power supply may be separately provided for each light source unit corresponding to each menu button.

In this case, the second control unit 40 locks the classified invalid buttons so as to prevent a malfunction occurring due to the input of the invalid buttons in advance.

Therefore, the user can easily determine the type of menu button that can be input by the user in the current state, and can easily grasp the position of the menu button.

In addition, the second controller 40 detects a type of a menu button input in an operation mode to change an activation state of the light source unit.

<When entering the menu button> Menu button Operating status Operation mode POWER Invalid Menu navigation buttons (∧, ∨, <,>, O) available MENU available ENTER Invalid SOURCE Invalid AUTO Invalid

That is, as shown in Table 2, when the input of the menu button 11 is detected in the operation mode state, the second control unit 40 activates only the menu buttons (menu moving button, menu button) corresponding to the menu setting. Let's do it.

In other words, when the input of the menu button 11 is detected as shown in FIG. 4, only the light source unit corresponding to the menu move button 16, which is a menu related button such as menu move and menu selection, is activated. The light source portion of the menu button is deactivated.

As such, the display device having the touch sensor according to the exemplary embodiment of the present invention can prevent unnecessary operation of the display device by locking an invalid key, that is, an unnecessary key according to the operation state of the display device, and also enables the backlight of a valid key. By activating only the location of a valid key to the user, the user's convenience can be maximized.

In the control method of the display apparatus having the touch sensor according to the embodiment of the present invention configured as described above, as shown in FIG. 5, first, a user input of a specific menu button is sensed (S10).

Next, the operation state of the current system is determined (S20). That is, it is determined whether the operation state of the current system is a standby mode or an operation mode.

In operation S30, it is determined whether a specific menu button on which the input is detected is valid based on the determined system operation state.

Subsequently, when the specific menu button in which the input is detected is invalid, the determination result (S30) classifies various menu buttons into a valid menu button and an invalid menu button based on the determined system operation state (S40).

Subsequently, only a light source unit corresponding to a valid menu button among the classified menu buttons is activated (S50). That is, by activating only the LED corresponding to the effective menu button, it is possible to supply light for indicating the position of the menu button corresponding to the effective menu button.

In addition, a lock setting is performed on the invalid menu buttons among the classified menu buttons (S60).

On the other hand, if the specific menu button on which the input is detected is valid, the determination result (S30) performs a function operation corresponding to the input specific menu button (S70).

In addition, the activation state of the light source unit is changed according to a menu button at which an input is periodically detected.

As described above, the control method of the display apparatus with the touch sensor according to the embodiment of the present invention can prevent unnecessary operation of the display apparatus by locking an invalid key, that is, an unnecessary key, according to the operation state of the display apparatus. By activating only the backlight of the key to inform the user of the location of a valid key, the user's convenience can be maximized.

1 is a view showing the configuration of a display device having a touch sensor according to an embodiment of the present invention.

2 is a view showing a general touch keypad according to an embodiment of the present invention.

3 is a view showing an example of a divided touch keypad according to an embodiment of the present invention.

4 is a view showing another example of the divided touch keypad according to an embodiment of the present invention.

5 is a flowchart illustrating a step-by-step control method of a display apparatus having a touch sensor according to an exemplary embodiment of the present invention.

<< Explanation of symbols for main part of drawing >>

10: touch keypad 20: touch sensor

30: first control unit 40: second control unit

50: light source 60: power supply

Claims

A touch keypad for displaying images corresponding to various menu buttons;

A touch sensor unit sensing a user input applied to the touch keypad;

A first control unit which checks and outputs information of a specific menu button input from a user according to an input detection signal of the touch sensor unit; And,

And determining a validity of a specific menu button output through the first control unit according to a system operation state, and accordingly, comprising a second control unit for classifying and displaying a valid menu button and an invalid menu button on the touch keypad. Display device having a touch sensor.

The method of claim 1,

And a light source unit disposed to correspond to the number of the various menu buttons and configured to supply light to the front of the touch keypad.

3. The method of claim 2,

And the control unit activates only a light source unit corresponding to an effective menu button according to a current operating state of the system.

The method of claim 1,

And the control unit controls a lock setting of an invalid menu button according to a current operating state of the system.

Detecting a user input applied to a touch key pad on which various menu buttons are displayed;

Determining a validity of a specific menu button on which the input is detected according to a current system state;

Classifying a valid menu button and an invalid menu button according to a current system operation state according to whether the specific menu button is valid; And,

And classifying and displaying the valid menu button and the invalid menu button, respectively.

The method of claim 5,

Displaying the valid menu button and the invalid menu button separately

Activating a light source disposed corresponding to the effective menu buttons of the classified touch keypad;

And deactivating a light source disposed corresponding to the invalid menu buttons of the sorted touch keypad.

The method of claim 5,

And setting a lock function for prohibiting the function operation of the classified invalid menu buttons.

The method of claim 5,

And periodically detecting a user input applied to the touch keypad of the effective button to change an activation state of the light source.