KR101333216B1 - Color image display, tough control system and method for detection touch action - Google Patents

Abstract

According to an aspect of the present invention, in a display system in which a group of devices that emit light in a plurality of colors is arranged in rows and columns and senses an input according to a touch operation, the group of any one of the plurality of device crowds has a light emitting function and a light receiving function. A display panel formed of a light-emitting photovoltaic device having a light-emitting photoelectric device, except for the light-emitting photoelectric device; A display control apparatus including controlling a detection period and a light emission period of the combined photoelectric device and controlling a light emission period of the light emitting device group; A detector configured to detect a touch operation during the detection period; A current supply device for controlling current supply and interruption for each of the light emitting photovoltaic device and each device of the light emitting device according to a control command of the display control device; And displaying a full color image in a set color of the plurality of device groups under the control of the display controller, and simultaneously detecting the touch operation and executing a control by a set command. A touch control system and method thereof are provided.

Description

Color Image Display, Touch Control System and Touch Detection Control Method {COLOR IMAGE DISPLAY, TOUGH CONTROL SYSTEM AND METHOD FOR DETECTION TOUCH ACTION}

The present invention relates to a color image display control and a touch detection control method for detecting an input according to a touch operation in a color image panel emitting light in a plurality of colors.

Dimming control of each LED corresponding to three colors of red, green, and blue can express all colors.

In a touch pad display in which light intensity is measured and input, light is sensed by using a light emitting element and a light receiving element separately, thereby increasing the cost of the overall design.

One of the touch detection schemes is a capacitive touch detection scheme. For example, Korean Unexamined Patent Publication No. 2011-0128556 discloses a touch sensor having a light transmittance for detecting a change in capacitance on top of an LED for display originally provided in a display device, and according to an external proximity object. When the capacitance changes, the touch detection operation is performed by analyzing the touch detection signal appearing on the touch detection electrode in accordance with the drive signal.

Conventional thin film photoelectric conversion elements can function as either light emitting elements or light receiving elements depending on the arrangement of the power supply and detection terminals.

The thin film photoelectric conversion element includes a transparent pixel electrode made of an ITO film, a hole injection layer, an organic semiconductor film, and an opposing electrode made of a metal film such as lithium-containing aluminum and calcium.

When a voltage is applied to the counter electrode and the pixel electrode in order to use the thin film photoelectric conversion element as a light emitting element (a current controlled light emitting element), the current flowing through the organic semiconductor film in a state where the applied voltage exceeds the threshold voltage of the thin film photoelectric conversion element. The driving current rapidly increases, and the thin film photoelectric conversion element emits light as an LED element.

Next, when light reaches the thin film photoelectric conversion element through the pixel electrode, a photocurrent is generated in the organic semiconductor film. At this time, the thin film photoelectric conversion element functions as a light receiving element that generates a potential difference between the counter electrode and the pixel electrode.

10-2011-0128556 Touch input device

The present invention provides a color image display control and a touch detection control method capable of periodically performing a light emission function and a light reception function to some light emitting elements in a color image light emitting panel to detect a touch operation and a spot while performing full color control. To provide.

In addition, the present invention provides an RGB LED display touch device and a touch detection method that are not affected by external illumination and visible light.

According to an aspect of the present invention, in a display system in which a group of devices that emit light in a plurality of colors is arranged in rows and columns and senses an input according to a touch operation, the group of any one of the plurality of device crowds has a light emitting function and a light receiving function. A display panel formed of a light-emitting photovoltaic device having a light-emitting photoelectric device, except for the light-emitting photoelectric device; A display control apparatus including controlling a detection period and a light emission period of the combined photoelectric device and controlling a light emission period of the light emitting device group; A detector configured to detect a touch operation during the detection period; A current supply device for controlling current supply and interruption for each of the light emitting photovoltaic device and each device of the light emitting device according to a control command of the display control device; And displaying a full color image in a set color of the plurality of device groups under the control of the display controller, and simultaneously detecting the touch operation and executing a control by a set command. A touch control system is provided.

In addition, in a color image display control and a touch detection control method in which a group of elements emitting light in a plurality of colors are arranged in rows and columns, and sensing an input according to a touch operation, the group of any one of the plurality of device crowds emits light and receives a light. A light-emitting photovoltaic device having a function, and the rest except for the light-emitting photovoltaic device is formed of a light-emitting device group and displayed on a display panel; By the display controller, the light-emitting photoelectric device is controlled to perform a light receiving function during a measurement time of a detection period, to perform a light emitting function in a light emission period, and to detect a touch operation during the detection period; A current supply and a shut-off are controlled for each element of the light emitting combined use photoelectric device and the light emitting device group according to a control command of the display control device by a current supply device; Color image display control and pop-up is characterized in that a display control for displaying the full color image in the color set on the display panel under the control of the display control device and at the same time the light-emitting photoelectric device group detects the touch operation. A detection control method is provided.

According to an embodiment of the present invention, when configuring a lighting device or a display device using R, G, B LEDs, there is an effect of enabling a touch command control without being influenced by external lighting while simultaneously controlling the full color.

According to the embodiment of the present invention, when there is an external light, the current is changed by the touch, so that the touch point can be detected by detecting the changing current, and when there is no external light, the excited light of the LED emitting the light from the inside The touch point is detected by measuring a change in current reflected from the touch point reflected by the touch body.

According to an exemplary embodiment of the present invention, there is an effect of detecting the presence or absence of external illumination by analyzing a signal periodically detected in a detection period.

According to the embodiment of the present invention, the current value is accumulated and the sensitivity and the reaction rate can be set in software using the average value and the deviation.

1 is a view showing the internal configuration of an RGB LED color display touch device according to an embodiment of the present invention.
2 is a view showing a MOSFET current supply device according to an embodiment of the present invention.
3 is a process diagram for explaining another touch and display control step according to an embodiment of the present invention.
4 is a timing chart showing an operation sequence for each RGB LED according to an embodiment of the present invention.
5 is a process diagram illustrating a step of performing touch point detection using the measured current value.
6 is a diagram illustrating a table screen extended in two dimensions according to an embodiment of the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities.

It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

In addition, when a part includes a certain component, this means that it may further include other components, without excluding other components, unless specifically stated otherwise.

The present invention relates to a color image display control and touch detection control method in which a group of elements emitting light in a plurality of colors is arranged in rows and columns and senses an input according to a touch operation.

The color image display and the touch control system according to the present invention include a display panel, a display control device, a detector, and a current supply device.

Any one group of the plurality of device groups is formed of a light-emitting photoelectric device having a light emitting function and a light receiving function, and the rest except for the light-emitting photoelectric device is formed of a light emitting device group and displayed on the display panel.

The display control apparatus according to an embodiment of the present invention controls the detection period and the emission period of the R LED group, which is a combined light emitting device, and the emission period of the G and B LED groups, which are light emitting elements.

That is, in the light emission period, all the devices emit light, but in the detection period, the light emitting function of the R LED group is blocked and only the photoelectric function is performed.

The detection unit according to an embodiment of the present invention detects a touch operation during the detection period.

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

1 is a view showing the internal configuration of an RGB LED full color display touch device according to an embodiment of the present invention.

 According to one embodiment of the invention, the R LED device will include a photoelectric device function.

By imposing a switching function between the opposing electrode of the photoelectric element, which is an R LED, and the power supply terminal and the detection terminal of the pixel electrode, the R LED can be used as a sensor that senses touch as well as an LED that emits light to the light / light itself. It is.

The display control apparatus 10 according to an embodiment of the present invention controls each of the LEDs to desired illuminance and color through dynamic control and dimming control, and controls the display control and the flow of the entire system.

The display controller 10 stores a data table in a flash memory for controlling each LED to a desired color.

The display controller 10 may be a chip including general purpose I / O pins (GPIO), a universal asynchronous receiver / transmitter (UART), and a flash memory.

According to an embodiment of the present invention, the display control device 10 sets the mode to distinguish between the presence and absence of illumination for flow determination, and controls the detector and the presence or absence of illumination is the total light received by the detector. The average of the quantities can be selected via serial communication.

According to an embodiment of the present invention, the on / off light emission period of the display is controlled to 60 Hz, and the detection period of the detector is controlled to detect the measurement time of 0.2 ms every 60 Hz.

The detection period should be continuously detected by detecting touch and responding to the corresponding command of the display for the touch point.However, since the LED of the R LED should be stopped during current value measurement, the presence or absence of the touch can be detected every cycle. It should be set to the minimum detection period.

That is, according to the exemplary embodiment of the present invention, the detection unit 50 detects a touch every 60 [Hz] while the display is in progress, and transmits the information to the display control device 10, wherein 0.2 [ms] During the measurement time, it is possible to search for the presence or absence of a touch and the touch point.

As a result of the repetitive experiment, the detection reliability was shown to be appropriate for the touch detection in the detection period of 30 [Hz] or more. Could be done.

In addition, if the measurement time is longer than 1 [ms], the blocking time of the R LED becomes longer, and the luminous efficiency decreases. The reliability is lowered.

The display first and second I / O control devices 20 and 21 are for controlling I / O of the display control and flow control device 10 and are combined with a latch and a decoder.

The NMOS current supply device 31 and the PMOS current supply device 30 are controlled to supply a current by using a MOSFET to an RGB LED array of the display panel module 40, and to detect a current in a popping period.

Referring to FIG. 2, the MOSFETs 36, 37, 38, and 39 connected to the resistor terminals are operated in parallel, and the MOSFETs 32, 33, 34, and 35 connected without resistance are operated in series.

The P and N type direct and parallel MOSFET current supplies can stably supply current to each LED device, enable individual current control for rows and columns, switching for detection currents, and modularized processing for LED arrays. Done.

In the step of measuring the current value of the detection unit 50, the MOSFET connected to the R LED as the detection element is in a blocking state.

In one embodiment, the display panel 40 module is formed of 64 RGB LEDs in a total of 8 * 8 vertically and has a structure covered with a light diffusion plate.

The display panel 40 module can display in full color through dynamic control and dimming control by the display control apparatus 10.

The display panel 40 module according to an embodiment of the present invention consists of an R, G, and B LED array, and any one of the R, G, and B LED arrays can perform both a light emitting function and a light receiving function. It consists of a photoelectric device that can.

In an embodiment of the present invention, the R LED array is employed as a device having a light emitting function and a light receiving function, and the G and B LED arrays are employed as a device group capable of performing only a light emitting function.

 The detector 50 measures the current value of the LED for each cycle.

According to an embodiment of the present invention, the detector 50 may include a measuring device capable of selecting a current value of a characteristic element of each LED array and measuring a current value, and an arithmetic device capable of performing a detection algorithm with the measured value. Include.

According to an embodiment of the present invention, in the case of the external lighting mode in the detector 50, the R, G, and B LED Dimming displays in which respective values are set are configured for color implementation specified in the ON routine for the entire array. After being controlled to have a signal, the current value for the R LED array is measured in the detection period.

The detection unit 50 performs the selected detection algorithm using the value measured in the detection period, and determines whether the touch detection, the touch point and the lighting device are transmitted to the display control device 10.

According to an embodiment of the present invention, in the detection period in the case of no illumination mode, in two adjacent LEDs PKG, the R line is connected to the current measuring unit, and the G and B lines emit light at a set value. As the light of the G and B lines is reflected or excited by the touch body, the current value is measured in the R line.

After a detection cycle for detecting and measuring the set R LED array, the R LED array is controlled to be turned ON for the set light emitting duty. After sequentially performing display and measurement on the entire LED array, the selected detection algorithm is performed, and whether the touch detection, the touch point, or the lighting device is determined is transmitted to the display unit controller 10 through serial communication.

Through the received data, the display controller 10 may determine whether the touch is performed by adding a visual effect by changing a dimming value.

In one embodiment, the voltage value generated by the LED current is converted through the ADC converter to measure the current value in the R LED.

3 is a process diagram for explaining a step of performing display control.

Referring to FIG. 3, step S10 is an initialization step.

In the initializing step, data for displaying each LED is received from another device or prepared to receive data stored therein.

In step S20, the operation mode is selected.

In step S20, the next step is performed according to the operation mode selection.

In one embodiment, the first operation is performed in the illuminated mode.

Then, the next step mode may be selected according to the overall average value of one of the results of the detection algorithm.

In step S30, one row or one column is displayed with the RGB values respectively set.

Step S40 checks whether display has been performed until the last line.

In one embodiment, if it is confirmed that a total of 16 displays are performed, the process proceeds to the next step.

In step S50, a current value is measured with respect to the R element installed as both light receiving and light emitting among the R, G, and B LED groups in one row or one column.

In step S60 it is checked whether the current value measurement has been measured up to the last line.

The measurement time occupies about 1/5 to 1/4 of the light emission time of the entire LED, and the R LED is controlled by adding the light emission amount in consideration of the time to be blocked for measurement.

A detection algorithm is performed in step S70 and the display is controlled in step S120 according to the performed result.

When the matrix position information signal of the light-emitting device corresponding to the measured current value is transmitted to the display control apparatus 10, the display control apparatus 10 controls to perform an operation command according to the transmitted signal.

If there is an external lighting, the sensing current by the external lighting is changed by the touch, so that the touch point is selected by sensing the changing current.

When the external lighting is selected in step S20, the display preparation and the current detection preparation are made in step S80.

In one embodiment, the display is prepared in the first row of G and B LED arrays, and the current value measurement is prepared in two rows of the R LED arrays.

In one embodiment, the example tropics described in Table 1 below.

Display and measurement control display
G, B LED One 2 3 4 5 6 7 8 Measure
R LED 2 One 4 3 6 5 8 7

The detection algorithm is performed by measuring the current value of the R LED.

In step S90, the LED of the set row or column is displayed and the current value of the other color LED of the row or column that is not displayed is measured.

In the absence of external lighting, the G and B LEDs that emit from the inside are reflected by the touch body and the excited light is reflected so that more current flows at the touch point. It is possible to detect the touch point by analyzing the.

Display and measurement are performed in two adjacent rows or two columns.

In one embodiment, the current value of the R LED of the set row or column is measured while displaying the G and B LEDs of the set row or column.

In step S100, the display of the R LED after the current value measurement is performed.

4 is a timing chart showing an operation sequence for each RGB LED from the step S80 to S100 according to an embodiment of the present invention.

Referring to FIG. 4, the measurement is performed in an inactive section of the R LED and the measurement time of the detection period is measured in a short time compared to the light emission time.

In addition, the G and B LEDs emit light during the measurement time of the R LEDs.

5 is a process illustrating a detection step for a touch using a measured current value.

Step S71 is a data acquisition step.

According to one embodiment of the invention, step S71 is applied equally in a mode with and without an illumination.

In an exemplary embodiment, a value expanded in two dimensions is calculated by adding the measured current values 1 to 8 and 1 to 8, respectively.

Table 2 shows that 64 tables matching the LED positions are used.

According to one embodiment of the invention, the display proceeds sequentially for effective detection of the touch and the touch can be detected by analyzing the current change of the R LED around the displayed LED row or column.

2-dimensional extended row and column data combinations Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Row 1 Row1 + column1 Row1 + column2 Row1 + column3 Row1 + column4 Row1 + column5 Row1 + column6 Row1 + column7 Row1 + column8 Row 2 Row2 + column1 Row2 + column2 Row2 + column3 Row2 + column4 Row2 + column5 Row2 + column6 Row2 + column7 Row2 + column8 Row 3 Row3 + column1 Row3 + column2 Row3 + column3 Row3 + column4 Row3 + column5 Row3 + column6 Row3 + column7 Row3 + column8 Row 4 Row4 + column1 Row4 + column2 Row4 + column3 Row4 + column4 Row4 + column5 Row4 + column6 Row4 + column7 Row4 + column8 Row 5 Row5 + column1 Row5 + column2 Row5 + column3 Row5 + column4 Row5 + column5 Row5 + column6 Row5 + column7 Row5 + column8 Row 6 Row6 + column1 Row6 + column2 Row 6 + column 3 Row6 + column4 Row 6 + column 5 Row6 + column6 Row 6 + column 7 Row6 + column8 Row 7 Row7 + column1 Row7 + column2 Row 7 + column 3 Row 7 + column 4 Row 7 + column 5 Row 7 + column 6 Row7 + column7 Row 7 + column 8 Row 8 Row8 + column1 Row8 + column2 Row8 + column3 Row8 + column4 Row8 + column5 Row8 + column6 Row8 + column7 Row8 + column8

6 is a diagram illustrating a table screen extended in two dimensions according to an embodiment of the present invention.

Referring to FIG. 6, a value of one pixel represents a value between about 120 and 150. The value is measured in an indoor environment with everyday lighting and may vary depending on the characteristics of the LED device, the design of the amplification circuit, and the reference voltage setting of the ADC.

Step S72 is an average value updating step.

In step S72 according to an embodiment of the present invention, the average value is updated by giving a weight for adjusting the reaction sensitivity to the accumulated average value and the current value. The touch response sensitivity may be adjusted in software according to the set weight.

Step S73 is a step of obtaining a deviation between the average value and the current value.

In an embodiment of the present invention, the deviation is calculated according to the calculation of the following equations.

[Formula 1]

,

,

,

,

[Formula 2]

[Formula 3]

[Formula 4]

[Formula 5]

/

Of

[Formula 6]

In Equation 1, t denotes a current time, i denotes a row, j denotes a column, V denotes a voltage data value measured at a point, and r and c denote vectors from 0 to 7. [Equation 1] is a formula for making current value data corresponding to 64 tables of [Table 2] from current values composed of rows and columns in step S71.

M in [Equation 2] means the accumulated average value of each point, W is the weight.

Δ in [Equation 3] means deviation, and Δ * in [Equation 4] means accumulated deviation.

Referring to [Equation 2] above, W is set to a value larger than 1, and as the value increases, the weight of the current value decreases and the influence of the accumulated mean value decreases.

 Step S73 is a step of obtaining a deviation by subtracting the current value from each average value.

According to an embodiment of the present invention, the deviation is obtained by subtracting the current value from the accumulated average value as shown in [Equation 3].

In step S74, the previous deviation value and the current deviation value are added to form a new deviation value.

In an embodiment of the present invention, the cumulative deviation is obtained by adding the previous deviation and the current deviation with reference to [Equation 4].

In Equation 4, only the deviation for time t-1 is considered, but the time before t-1 may be additionally considered.

Cumulative deviation increases noise rejection and precision.

In actual applications, when noise caused by a fast-moving object or external impact occurs, the deviation seen at t time itself may deviate from the reference value, but because it changes and passes momentarily, the accumulated deviation does not deviate from the threshold (touch detection). Software compensation).

Step S75 is a step of determining the ratio between the mean value and the cumulative deviation.

In an embodiment of the present invention, the cumulative deviation is divided by the average value with reference to [Equation 5] in step S75 to determine the ratio between the average value and the cumulative deviation.

Step S76 is a step of selecting an operation mode.

In one embodiment of the present invention, a predetermined mode is selected in step S76.

In an embodiment of the present invention, a new average of all the accumulated average values is obtained with reference to [Equation 6], and the presence or absence of external illumination is determined by comparing the magnitudes.

Since it is the average of the current values measured across the R LEDs, it can be said to be the amount of light currently incident, that is, the ambient illuminance.

 Compensate for the weak point of the instantaneous response by calculating the average value of the whole using the average of the accumulated current value, and check the total current value of the system configured through the software according to the lighting status and set the value of 20 to determine the lighting do.

That is, the mean value of the above means the average value of the current light to the average value of the cumulative illumination, it is possible to determine whether the illumination affects the touch determination according to the accumulated learning data in the past.

In one embodiment of the present invention, if the total average value obtained in [Equation 6] is 20 or less, it is set to operate in the absence of illumination.

The set value may vary depending on the arrangement of the RGB LED array or the transmittance of the installed diffusion plate.

According to an embodiment of the present invention, touch detection is performed differently according to the determined operation mode. The detection of the touch is distinguished between On and Off, and On means that the touch is off, Off means that the touch is finished.

Step S77 is a step of detecting in a mode with external illumination.

According to an embodiment of the present invention, when there is external lighting in step S77, when On is a positive value or more than a predetermined value, Off is detected when a negative value is a predetermined value or less.

Referring to [Equation 5] according to an embodiment of the present invention, the Threshold value is set to be greater than 0.3 when On, and less than -0.15 when Off. The threshold value may be changed to an appropriate range according to the installed environment and the preferred method of operation.

According to an embodiment of the present invention, since the amount of light decreases when the touch is performed in the state of surrounding lighting, the current value is reduced by the touch, and the presence or absence of the touch is detected by detecting the reduced current value. do.

Step S78 is a step of detecting in no light mode.

In one embodiment, in step S78, the touch is detected as a result opposite to the previous mode (when there is light).

That is, On detects when On is less than or equal to a certain value from Negative value, Off detects when On is more than or equal to a certain value.

Referring to [Equation 5] according to an embodiment of the present invention, the Threshold value is set to less than -0.3 when On, and larger than 0.15 when Off. The threshold value can be changed depending on the installed environment and the preferred method of operation.

That is, according to an embodiment of the present invention, when there is no illumination, the increase in the current value according to the reflection of the internal display light excited by the touch by touch can be detected based on the current detected by the R LED.

Step S79 is a step of transmitting data for On and Off touch points to the display control device.

According to an embodiment of the present invention, step S79 recognizes the row and column coordinate values of the R LED detected as the increase or decrease of the current value more than the set value as the touch point, and displays the data for the On Off touch point. To the device.

Transmission method may adopt UART (universal asynchronous receiver transmitter).

In addition, the display data for the touch point may be changed so that the user may know that the touch is made.

According to an embodiment of the present invention, since the amount of light decreases when the touch is performed in the presence of ambient lighting, the current value is reduced by the touch and the current value is detected by the touch.

According to one embodiment of the invention, the display proceeds sequentially for effective detection of the touch and the touch can be detected by selecting the periphery of the LED row or column being displayed.

According to an embodiment of the present invention, it is detected that there is illumination and there is no light, and based on this can be used to detect the touch point by setting a set value for the touch operation.

In addition, according to an embodiment of the present invention, it is possible to set the sensitivity and the reaction rate by software by accumulating the current value using the average value and the deviation.

In step S110, it is checked whether the current value measurement is measured until the last line.

In one embodiment, a total of 16 measurements are performed.

A detection algorithm is performed in step S70 and the display is controlled in step S120 according to the performed result.

10: display control device
20, 21: first and second display I / O controller
30: P MOSFET current supply
31: N MOSFET current supply
40: Display panel
50:

Claims (10)

A display system in which a group of elements emitting light in a plurality of colors is arranged in rows and columns and senses an input according to a touch operation,
Any one group of the plurality of device group is formed of a light-emitting photoelectric device having a light emitting function and a light receiving function, the display panel is formed of a light emitting device group except the light-emitting combined photoelectric device;
A display control apparatus including controlling a detection period and a light emission period of the combined photoelectric device and controlling a light emission period of the light emitting device group;
A detector configured to detect a touch operation during the detection period;
A current supply device for controlling current supply and interruption for each of the light emitting photovoltaic device and each device of the light emitting device according to a control command of the display control device;
Including;
Under the control of the display control device, the plurality of device groups display the full color image in the set color and at the same time detect the touch operation to execute the control by the set command,
The display control device performs control by dividing the state without external illumination and the state with external illumination, and in the absence of the external illumination, the light emitted by the light emitting element group adjacent to the current is generated by the light reflected by the touch body. Color image display touch control system characterized in that for detecting the touch operation by detecting in the light-emitting photoelectric device
The method of claim 1,
The group of devices emitting light in a plurality of colors is a group of R, G, and B LEDs, and the light emitting dual photoelectric device is a group of R LEDs.
The method of claim 1,
The current supply device is a MOSFET current supply device of the P and N type which is controlled to supply or cut off the current according to the control command of the display controller for the individual current control for the selected row or column of each device group. Color image display touch control system
delete The method of claim 1,
Measurement time for the detection period is a color image display touch control system, characterized in that 0.2 ~ 1 [ms] every 30 ~ 60 [Hz]
A color image display control and touch detection control method in which a group of elements emitting light in a plurality of colors is arranged in rows and columns and senses an input according to a touch operation,
Any one group of the plurality of device crowds is formed of a light-emitting photoelectric device having a light-emitting function and a light-receiving function, and the rest except the light-emitting photoelectric device is formed of a light-emitting device group and displayed on a display panel;
By the display controller, the light-emitting photoelectric device is controlled to perform a light receiving function during a measurement time of a detection period, to perform a light emitting function in a light emission period, and to detect a touch operation during the detection period;
A current supply and a shut-off are controlled for each element of the light emitting combined use photoelectric device and the light emitting device group according to a control command of the display control device by a current supply device;
While displaying the full color image in the color set on the display panel under the control of the display control device, the display control for detecting the touch operation is performed on the light-emitting photoelectric device groups,
The display control
Selectively performing an operation mode as there is external lighting and no;
In the external illumination mode, the light emitting photovoltaic device analyzes a current value of which the external light is reduced by the touch body during the detection period to detect whether the touch is performed, and positions a matrix of the light emitting device corresponding to the detected current value. Transmitting an information signal; And
And performing an operation command according to the transmitted signal.
delete The method according to claim 6,
The display control
Selectively performing an operating mode in the presence or absence of external lighting;
In the mode without the external illumination, the touch operation is detected by analyzing that the light emitted from the light emitting element adjacent to the inside increases during the detection period, the current value flowing through the light emitting photovoltaic element is increased by the light reflected by the touch body, Transmitting a matrix position information signal of a light-emitting device corresponding to the detected touch operation;
Performing an operation command according to the transmitted signal; color image display control and touch detection control method
9. The method according to claim 6 or 8,
Color image display control and touch detection control method characterized by setting the sensitivity and the reaction rate by accumulating the current value using the average value and the deviation
9. The method according to claim 6 or 8,
Distinguishing the presence or absence of the external illumination is a color image display control and touch detection control method characterized by distinguishing the average of the entire current value by comparing with the cumulative average value of the set illumination

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