JPH086723A - Display device with touch panel - Google Patents

Abstract

PURPOSE:To provide the display device with the touch panel which adjusts the display position of display data on an LCD on the basis of the phase shift quantity between the LCD and touch panel. CONSTITUTION:The position shift quantity between the LCD 15 and touch panel 17 is converted into the number of dots of the LCD 16, which is stored in a position correction memory 19; when a display instruction or touch data of the touch panel 17 are inputted, a control circuit 18 reads corresponding character data out of a character generator memory 21 and expands the data into dots at a position in a DRAM 22 corresponding to the display position, but the expansion position is corrected at this time according to the position shift quantity in the position correction memory 19. The dot data after the position correction are converted by a data converting circuit 23 into serial data, which are inputted to an LCD driving circuit 24, and the LCD driving circuit 24 displays the character on the LCD 16 at the position after the correction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device with a touch panel, and more particularly to a display device with a touch panel for adjusting a positional deviation when a touch panel is stacked on an LCD by correcting a display position on the LCD.

[0002]

2. Description of the Related Art Generally, an LCD (Liquid Liquid) is used as a display device.
As shown in FIG. 10, a display device with a touch panel using a Crystal Display) is created by stacking the touch panel 2 on the LCD 1 and pasting them together. In stacking the touch panel 2 on the LCD 1, , By aligning the pair of overlay marks 1a, 1b formed at the two corners of the LCD 1 and the pair of overlay marks 2a, 2b formed at the two corners of the touch panel 2 to align the LCD 1 and the touch panel 2 with each other. It is carried out.

As a conventional display device with a touch panel, generally, the LCD 1 and the touch panel 2 have the same size, and a predetermined size is provided on the LCD 1 having a plurality of display dots in a matrix. Touch panel 2 having a plurality of size recognition units in a matrix
Are overlaid.

The size of the recognition unit of the touch panel 2 is several steps larger than the size of the display dot of the LCD 1,
For example, the number of display dots of one character on the LCD 1 (for example, 9
X9, 16x16, etc.).

Such a display device with a touch panel is
For example, when character data such as a character or a graphic is displayed at a position of the LCD 1 corresponding to a touch area formed by at least one or more recognition units of the touch panel 2, the touch area of the touch panel 2 is touched. The character data displayed in the touch area is recognized by recognizing that the character data is displayed. In addition, when a touch area in which no display data is displayed is touched, the display device with a touch panel drives the display dots of the LCD 1 corresponding to the touched area with predetermined character data based on the touch information. Display character data.

[0006]

However, in such a conventional display device with a touch panel, the LC
Since the touch panel is overlaid on D, and there is no error in the overlay, the display data is displayed on the LCD corresponding to the touch area of the touch panel.
If a positional error occurs in the superposition of D and the touch panel, a positional error occurs between the touch area of the touch panel and the display data, which may hinder proper touch operation.

That is, as shown in FIG.
CD1 is provided with a plurality of display dots 3 in a matrix,
For example, assume that character data "E" is displayed in the area shown in FIG.
However, as shown in FIG.
It is assumed that the touch areas 4 having a size corresponding to the display dots are provided in a matrix form, and when the touch panel 2 is overlaid on the LCD 1, as shown in FIG. When there is no displacement, the display data (“E” in FIG. 11) displayed on the LCD 1 is displayed at an appropriate position within the touch area 4 of the touch panel 2.

However, when the position where the LCD 1 and the touch panel 2 are overlaid is deviated, as shown in FIG.
The display data of the LCD 1 is the touch area 4 of the touch panel 2.
It is not properly displayed inside, and a position error occurs between the display position of the display data of the LCD 1 and the touch area of the touch panel 2.

As a result, there is a problem that an appropriate touch operation cannot be performed. Therefore, the present invention has been made in view of the above circumstances, and properly displays the display data of the LCD within the touch area of the touch panel even if the LCD and the touch panel are misaligned.
An object of the present invention is to provide a display device with a touch panel in which the operability of touch operation is improved.

[0010]

According to a first aspect of the present invention, there is provided a display device with a touch panel, wherein a liquid crystal display panel having a plurality of display dots in a matrix form is superimposed on the liquid crystal display panel. When a touch area having a region larger than a dot of the minimum display unit of the liquid crystal display panel as a minimum recognition unit and a touch area including at least one of the recognition units of the touch panel are touched, based on the touch information, In a display device with a touch panel, which comprises a recognition / display control unit for displaying predetermined display data on the liquid crystal display panel at a position corresponding to the touch area, a positional deviation of superposition of the liquid crystal display panel and the touch panel. The positional shift amount storage means for storing the amount and the position stored in the positional shift amount storage means Position correction means for correcting the display position of the display data to be displayed at the position of the liquid crystal display panel corresponding to the touch area of the touch panel on the basis of the amount in display dot units of the liquid crystal display panel. Thus, the above-mentioned object is achieved.

Further, according to a display device with a touch panel of the present invention, as described in claim 2, a liquid crystal display panel having a plurality of display dots in a matrix and a liquid crystal display panel of the liquid crystal display panel which is superposed on the liquid crystal display panel. A touch panel having an area larger than a dot of the minimum display unit as a minimum recognition unit, a data storage unit for storing display data, and a dot data storage area having a size corresponding to at least the display area of the liquid crystal display panel, A developed data storage unit that stores the correlation with the display region and develops and stores the display data read out from the data storage unit as dot data, and a touch region including at least one of the recognition units of the touch panel. When is touched, a predetermined display data is output from the data storage means based on the touch information. Recognizing / display control for reading out the data and expanding it as dot data at a position corresponding to the touched area of the expanded data storage means corresponding to the display area of the liquid crystal display panel and then displaying the dot data on the liquid crystal display panel. In a display device with a touch panel, and a position shift amount storage unit that stores the position shift amount of the overlay of the liquid crystal display panel and the touch panel, and the position shift amount stored in the position shift amount storage unit. On the basis of the above, position correction means for correcting the expanded position in the expanded data storage means of the display data displayed at the position of the liquid crystal display panel corresponding to the touch area of the touch panel in display dot units of the liquid crystal display panel. By providing the and, the above object is achieved.

In each of the above cases, for example, as described in claim 3, the entire display area of the liquid crystal display panel is divided into a plurality of display dot areas in the vertical and horizontal directions with respect to the entire touch area of the touch panel. It may be large.

Further, for example, the position shift amount storage means may store the position shift amount as a display dot amount in the vertical / horizontal direction of the liquid crystal display panel. Good.

Further, for example, the position shift amount storage means stores the position shift amount as the position shift amount of the alignment mark between the liquid crystal display panel and the touch panel. It may be.

Further, for example, the position shift amount storage means stores the position shift amount as a shift amount of a display position of display data for each touch area of the touch panel. May be.

[0016]

According to the display device with a touch panel as set forth in claim 1, the positional deviation amount of the superposition of the liquid crystal display panel and the touch panel is stored in the positional deviation amount storage means, and at least one or more recognition units of the touch panel are recognized. When the touch area is touched, when the display data is displayed by the recognition / display control means at the position of the liquid crystal display panel corresponding to the touch area, the position correction means changes the display position of the display data to be displayed. Correction is made for each display dot of the liquid crystal display panel based on the amount of positional deviation stored in the positional deviation amount storage means.

Therefore, the display data can be appropriately displayed at the position of the LCD corresponding to the touch position on the touch panel, and the touch position and the display position can be adjusted to appropriate positions.

As a result, the operability of the touch operation of the display device with a touch panel can be improved.

Further, according to the display device with a touch panel according to the second aspect, the positional displacement amount of the superposition of the liquid crystal display panel and the touch panel is stored in the positional displacement amount storage means, and at least one of the touch panels is recognized. When a touch area composed of units is touched, the display data stored in the data storage means is once expanded into dot data in the expanded data storage means, and then the recognition / display control means corresponds to the touch area. When displaying the display data on the position of the liquid crystal display panel, the position correction means displays the position on the liquid crystal display panel corresponding to the touch area of the touch panel based on the position shift amount stored in the position shift amount storage means. The expanded position of the display data in the expanded data storage means, in display dot units of the liquid crystal display panel, The location correction.

Therefore, by correcting the expansion position of the display data in the expansion data storage means, the display data can be properly displayed at the position of the LCD corresponding to the touch position on the touch panel, and the touch can be performed with a simple circuit. The position and display position can be adjusted to an appropriate position. As a result, it is possible to reduce the cost of the display device with a touch panel, which has good operability in touch operation.

In each of the above cases, for example, claim 3
As described in, the entire display area of the liquid crystal display panel, with respect to the entire touch area of the touch panel,
If a large number of display dots is provided in each of the vertical and horizontal directions, the positional deviation between the liquid crystal display panel and the touch panel can be easily corrected by adjusting the display position on the liquid crystal display panel.

Further, for example, as described in claim 4, when the positional deviation amount storage means stores the positional deviation amount as a display dot amount in the vertical / horizontal direction of the liquid crystal display panel, The positional shift between the display panel and the touch panel can be easily and promptly corrected in dot units of the liquid crystal display panel and displayed.

Further, for example, as described in claim 5, the positional deviation amount storage means stores the positional deviation amount as the positional deviation amount of the alignment mark between the liquid crystal display panel and the touch panel. Then, the displacement amount storage means can be inexpensive and small, and the display device with a touch panel that can adjust the display position of the liquid crystal display panel according to the touch area of the touch panel is inexpensive and small. You can

Further, for example, as described in claim 6, when the position shift amount storage means stores the position shift amount as a shift amount of the display position of the display data for each touch area of the touch panel. The position shift of the display data can be adjusted for each touch area of the touch panel, and the operability of the touch operation can be further improved.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. 1 to 9 are views showing an embodiment of a display device with a touch panel according to the present invention. First, the configuration of this embodiment will be described. FIG. 1 is an overall block configuration diagram of a display device 10 with a touch panel according to an embodiment of the present invention.

The display device with a touch panel 10 is connected to the main body unit 11 via the interface section 12, and includes a decoder 13, a memory section 14, and an LCD drive section 1.
5, a LCD (Liquid Crystal Display) 16, a touch panel 17, a control circuit 18, a position correction memory 19, and the like.

The main body unit 11 is an electronic device to which the display device with a touch panel 10 of this embodiment is applied, for example,
A main body portion of an electronic notebook or the like, which includes, for example, an operation unit, a power supply unit, and a main control unit that controls the electronic device.

The main body unit 11 outputs the control signal and various data such as command data and numerical data input from the operation unit to the interface unit 12 of the display device 10 with a touch panel.

The interface unit 12 is connected to the main unit 11 and also includes a decoder 13 and
The touch panel 17 and the control circuit 18 are connected,
Touch information (touch data) when the touch panel 17 is touched is input from the touch panel 17.

The interface section 12 outputs the control signal input from the main body unit 11 to the control circuit 18,
Data and touch data input from the main body unit 11 and the touch panel 17 are output to the decoder 13.

The decoder 13 includes an interface section 12
The data (including touch data) input from the device is decoded, and the decoding result is obtained by the control circuit 18 and the memory unit 1.
4 is output.

The control circuit 18 is the interface circuit 1
The display device with a touch panel 1 based on the control signal input from 2 and the command signal input from the decoder 13.
0 controls each part to operate as the display device with a touch panel 10, and in particular, as described later,
The correction processing of the display position of the display data on the LCD 16 is performed.

The memory section 14 includes a character generator memory 21 and a DDRAM 22. The character generator 21 is a ROM (Read Only Memory) or R.
The character generator 21 is composed of an AM (Random Access Memory) or the like, and character data (display data) such as symbols and characters is stored in advance in the character generator 21. Further, the character generator 21 is addressed by the control circuit 18 and the character is input from the decoder 13, whereby new display data is written, and the previously stored display data is new display data. Can be rewritten.

The character data in the character generator 21 is usually addressed and read by the control circuit 18 and written to a predetermined address in the DDRAM 22. The character data stored in the character generator 21 is composed of predetermined dots, for example, 7 dots × 5 dots.

The DDRAM 22 has a storage area of the same dot configuration as the display dots of the LCD 16, and the control circuit 18 stores the character data read from the character generator memory 21 in the DDRAM 2 as will be described later.
2 is dot-expanded and stored in an address corresponding to the display position of the character data.

The control circuit 18 outputs the display data expanded in the DDRAM 22 as parallel data. That is, the control circuit 18 normally reads character data (display data) from the character generator memory 21 in response to an instruction from the main control unit of the electronic device to which the display device with a touch panel 10 is applied, and the read display data is read. On the basis of display position data (address) indicating the display position of the LCD 16 to the corresponding position of the DDRAM 22.

The LCD drive section 15 includes a data conversion circuit 23.
And the LCD drive circuit 24.
The parallel display data from 2 is input to the data conversion circuit 23.

The data conversion circuit 23 operates on the basis of the control signal from the control circuit 18, and the DDRA of the memory section 14 is operated.
The parallel display data input from M22 is converted into serial display data and output to the LCD drive circuit 24.

The LCD drive circuit 24 operates under the control of the control circuit 18, generates a drive signal corresponding to the display data input from the data conversion circuit 23, outputs it to the LCD 16, and drives the LCD 16 for display. , Character data such as characters and symbols corresponding to the display data is displayed and output at a predetermined position on the LCD 16.

In the LCD 16, liquid crystal is sealed between a pair of transparent glass substrates, and a plurality of common lines and segment lines are formed in a matrix on the opposite surfaces of the pair of transparent glass substrates. Display dots made of liquid crystal are formed at the respective intersections with. The LCD drive circuit 24 outputs a drive signal to the common line and the segment line to selectively drive the display dots of the LCD 16 for display.

The touch panel 17, as shown in FIG.
A plurality of upper electrode plates 17a and a plurality of lower electrode plates 17b are stacked on the LCD 16 and are formed in a stacked state. The upper electrode plate 17a of the touch panel 17 is grounded via a resistor R0, and a predetermined reference voltage VDD is applied, and the lower electrode plates 17b of the touch panel 17 are grounded via a resistor R1. And the connected resistor R1 and the lower electrode plate 17b.
Output OUT11 to output OUT1 from the connection point with
n and outputs OUT21 to OUT2n are output.

That is, in the touch panel 17, a touch area T is defined as an overlapping area of the upper electrode plate 17a and the lower electrode plate 17b.
a, and when the upper electrode plate 17a of the touch area Ta is touched (pressed in the direction of the lower electrode plate 17b), the upper electrode 17a of the touch area Ta and the lower electrode 17b come into contact with each other, and the lower electrode 17b in contact therewith. Output OUT11 to output OUT1
The values of n and the outputs OUT21 to OUT2n (touch data) change from the ground potential to the reference voltage VDD.

As shown in FIG. 1, the touch panel 17 is connected to the interface section 12, and the touch output (touch data) of each touch area Ta of the touch panel 17 is output to the interface section 12.

The touch data on the touch panel 17 is output from the interface section 12 to the decoder 13, decoded by the decoder 13, and input to the control circuit 18.

The control circuit 18 recognizes which touch area Ta of the touch panel 17 has been touched based on the touch data input through the decoder 13 and performs various processes based on the touch information.

The LCD 16 has a display area larger than the touch panel 17 by a predetermined amount as shown in FIGS. 3 and 4, and the touch panel 17 is superposed on the LCD 16.

As shown in FIGS. 3 and 4, when the touch panel 17 is overlaid on the LCD 16, the LCD 16 is overlapped.
Alignment marks 16Ma, 16M formed on the two corners of the
b and the alignment marks 17Ma and 17Mb formed on the same two corners of the touch panel 17 are superposed so as to be aligned with each other.

Alignment mark 16M of this LCD 16
a and 16Mb and the alignment marks 16Ma and 16Mb of the touch panel 17 have different shapes as shown in FIGS. 5 and 6, and the alignment marks of the LCD 16 as shown in FIG. 16Ma, 16Mb
And alignment marks 17Ma, 17 on the touch panel 17
LCD 16 and touch panel 1 when Mb and Mb match
When 7 is overlaid, LCD 16 and touch panel 17
And, as shown in FIG. 3, it means that they are superposed at appropriate positions.

However, when the alignment marks 16Ma and 16Mb of the LCD 16 and the alignment marks 17Ma and 17Mb of the touch panel 17 are displaced from each other as shown in FIG. 6, the LCD 16 and the touch panel 17 are overlapped with each other. As shown in FIG. 4, the touch panel 17 and the touch panel 17 are overlapped with each other with a positional deviation.

In FIGS. 5 and 6, 16Mo and 17Mo are the alignment marks 16Ma and 1Ma, respectively.
6Mb center position and alignment marks 17Ma, 17
The center position of Mb is shown.

Next, the operation of this embodiment will be described. The display device with a touch panel 10 according to the present embodiment stores the positional deviation amount of the overlapping position of the LCD 16 and the touch panel 17 in the position correction memory 19, and based on the positional deviation amount in the position correction memory 19, the LCD 16 is displayed. By correcting the display position of the display data for each display dot of the LCD 16, the touch area Ta of the touch panel 17 and the LCD 16 are corrected.
The feature is that it matches the display position of the display data to.

Hereinafter, the position correction memory 1 for this amount of positional deviation will be described.
The process of storing the data in the display unit 9 and the process of displaying the display data on the LCD 16 based on the amount of displacement will be described with reference to the flowchart.

First, the process of storing the amount of positional deviation between the LCD 16 and the touch panel 17 in the position correction memory 19 will be described below with reference to the flowchart of FIG.
In the process of storing the positional deviation amount in the position correction memory 19, first, the positional deviation amount between the LCD 16 and the touch panel 17 is measured (step S1). That is, as described above, the LCD 16 and the touch panel 17 are position-adjusted by overlapping the alignment marks 16Ma and 16Mb of the LCD 16 and the alignment marks 17Ma and 17Mb of the touch panel 17, and are joined together by overlapping. But,
When the LCD 16 and the touch panel 17 are overlapped with each other, the alignment marks 16Ma and 16Mb of the LCD 16 and the alignment marks 17Ma and 17Mb of the touch panel 17 are accurately aligned due to the influence of air or the like between the LCD 16 and the touch panel 17. It is difficult to make them overlap and the LCD 16 and the touch panel 17 are
There will be some deviation.

Therefore, in this embodiment, when the LCD 16 and the touch panel 17 are overlaid with each other, as shown in FIG.
Mb and the alignment mark 17Ma of the touch panel 17,
The amount of positional deviation from 17 Mb is measured in each of the X direction (horizontal direction) and the Y direction (longitudinal direction).

The amount of displacement is measured by, for example, LCD
When the 16 and the touch panel 17 are overlaid, the LCD 1
The alignment marks 16Ma and 16Mb of 6 and the alignment marks 17Ma and 17Mb of the touch panel 17 are measured by an optical device or the like.

Next, this positional deviation amount (dimension) is calculated by the LCD 1
It is converted into the number of display dots of 6 (step S2) and input through the interface unit 12 (step S3). The amount of positional deviation may be input using a dedicated device, or may be input to the touch panel display device 10 from the operation unit of the main body unit 11 or the like. At this time,
To the display device with a touch panel 10, a command signal and a control signal indicating that the process of storing the positional deviation amount is input together with the positional deviation amount data converted into the number of display dots.

In the display device with a touch panel 10, when the command signal and the control signal are input to the interface section 12 together with the positional deviation amount, the interface section 12
Outputs a control signal to the control circuit 18, and outputs a command signal and positional deviation amount data to the decoder 13.
After decoding the command signal and displacement data,
Output to the control circuit 18.

The control circuit 18 stores the input positional deviation amount data in the position correction memory 19, and ends the positional deviation amount storage processing (step S4). Therefore, by the position shift amount storage processing, the position shift amount between the LCD 16 and the touch panel 17 converted into the display dot number of the LCD 16 is stored in the position correction memory 19 of the display device with a touch panel 10.

Next, the display process will be described below with reference to the flowchart of FIG. In the display processing, what kind of display data is displayed on the LCD 16 is
It is free, and the present embodiment is characterized in that the display position of the display data on the LCD 16 is corrected.

Therefore, in this display processing, for simplicity,
It will be described below that when the touch panel 17 is touched, predetermined character data is displayed in the touch area Ta of the touched touch panel 17.

In the display processing, first, it is checked whether or not there is data input, that is, whether or not touch data is input from the touch panel 17 via the interface section 12 and the decoder 13 (step P
1) When data is input, character data corresponding to the input data is read from the character generator memory 21 (step P2).

That is, it is determined which touch area Ta is touched, and the character data which is the display data previously assigned to the touch area Ta is read from the character generator memory 21.

Next, the positional deviation of the display position of the read character, which is the display position of the touch area Ta corresponding to the touch area Ta, is corrected (step P3), and the character data after the positional deviation correction is expanded in the DDRAM 22. (Step P4).

That is, when the touch data is input from the touch panel 17, the control circuit 18 reads the character data corresponding to the touch data from the character generator memory 21, and the position corresponding to the touch area Ta of the touch panel 17 of the DDRAM 22. At this time, the position correction memory 19 is referred to, and the position at which the character data of the DDRAM 22 is expanded is corrected by the number of display dots stored in the position correction memory 19 indicating the amount of positional deviation.

Specifically, for example, when the LCD 16 is used as a reference, the alignment mark 17M of the touch panel 17 is
a, 17Mb is the alignment mark 16M of the LCD 16
a, 16Mb and the alignment mark 1 on the touch panel 17
From the position where 7Ma and 17Mb coincide with each other, if the leftward direction is the minus direction of X and the upward direction is the minus direction of Y, the LCD
When there is a deviation of −2 dots in the X direction and −2 dots in the Y direction from the 16 alignment marks 16Ma and 16Mb, a character (for example, “E”) is displayed at a preset display position on the LCD 16. As a result, as shown in FIG. 6D, the character is displaced from the touch area Ta (touch area 4 in FIG. 6D) by 2 dots downward and 2 dots rightward. Will be displayed.

Therefore, in the display device 10 with a touch panel according to the present embodiment, the number of dots corresponding to this positional shift amount is
It is stored in the position correction memory 19 together with the deviation direction (plus / minus), and is stored in the position correction memory 19 when the control circuit 18 expands the character data read from the character generator memory 21 to the DDRAM 22. DDR based on the amount of displacement
The expansion position of the character data on the AM 22 is corrected. That is, in the above example, the position is corrected by 2 dots in the leftward direction and by 2 dots in the upward direction, and is expanded in the DDRAM 22.

In this way, the DD of the character data is
When the expansion into the RAM 22 is completed, next, the control circuit 18
Transfers all the dot data in the DDRAM 22 to the data conversion circuit 23 as parallel data, converts it into serial data in the data conversion circuit 23, and outputs it to the LCD drive circuit 24 (step P5).

The LCD drive circuit 24 drives the LCD 16 to display based on the serially input serial data (step P6), and displays and outputs the character corresponding to the LCD 16 (step P7).

As described above, according to the display device with a touch panel 10 of this embodiment, the LCD 16 and the touch panel 17 are provided.
Measure the amount of positional deviation between the
Converted to the number of display dots of and stored. Then, when the character data read from the character generator memory 21 is expanded in the DDRAM 22, the expanded position of the character data in the DDRAM 22 is corrected based on the amount of positional deviation stored in the position correction memory 19, and after correction. A character can be displayed and output on the LCD 16 based on the position.

Therefore, the LCD 16 and the touch panel 1
Even if the superimposition with 7 is slightly shifted, the display position of the character data, which is the display data, can be shifted by the number of display dots corresponding to the shift amount and displayed on the LCD 16, so that the touch panel 17 can be touched appropriately. Corresponding L
A character can be displayed at the position of the CD 16.

Further, the display device with a touch panel 10 is
When the touch panel 17 is touched, the control circuit 18
From the touch data, at that time, the touch panel 17
The display data (character data) displayed at the display position of the LCD 16 corresponding to the touch area Ta is recognized.

Now, as described above, the LCD 16
Display data (character data) of touch panel 1
Since the position is corrected so as to be properly displayed in the touch area Ta of 7, the touch operation on the touch panel 17 can be appropriately performed.

As described above, since the display position of the display data of the LCD 16 can be corrected so that the display data of the LCD 16 can be properly included in the touch area Ta of the touch panel 17, the operation of the touch panel 17 can be performed accurately and appropriately. Therefore, the operability of the touch panel can be improved.

For example, as shown in FIG. 11 (d), L
When the display position of the character data on the CD 16 is not corrected, the touch area Ta and LC of the touch panel 17 are
Even if a displacement occurs between the display data of D16 and the display data of D16, the display position of the character on the LCD 16 can be corrected in correspondence with the touch area Ta of the touch panel 17, as shown in FIG. The display data of the LCD 16 can be appropriately displayed in the touch area Ta of.

Further, in the above embodiment, since the positional deviation amount between the LCD 16 and the touch panel 17 is stored in the positional correction memory 19 as the number of display dots of the LCD 16, the positional correction of the display data can be performed quickly and at low cost. It can be done in a circuit.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, although the above embodiment is applied to the case where the character data stored in advance in the character generator memory 14 is displayed at the preset display position, the present invention is not limited to this. The same can be applied to a case where display data is appropriately displayed at the position of the LCD 16 corresponding to the touch position on the touch panel 17.

[0078]

According to the display device with a touch panel according to the first aspect of the present invention, the positional deviation amount of the superposition of the liquid crystal display panel and the touch panel is stored in the positional deviation amount storage means, and at least one or more of the touch panels is recognized. When the touch area made up of units is touched, the recognition / display control means causes the position correction means to display the display data at the position of the liquid crystal display panel corresponding to the touch area.
The display position of the display data to be displayed is corrected for each display dot of the liquid crystal display panel based on the amount of positional deviation stored in the positional deviation amount storage means.

Therefore, the display data can be appropriately displayed at the position of the LCD corresponding to the touch position of the touch panel, and the touch position and the display position can be adjusted to the appropriate positions. As a result, the operability of the touch operation of the display device with a touch panel can be improved.

Further, according to the display device with a touch panel of the second aspect, the positional displacement amount of the superposition of the liquid crystal display panel and the touch panel is stored in the positional displacement amount storage means, and at least one of the touch panels is recognized. When a touch area composed of units is touched, the display data stored in the data storage means is once expanded into dot data in the expanded data storage means, and then the recognition / display control means corresponds to the touch area. When displaying the display data on the position of the liquid crystal display panel, the position correction means displays the position on the liquid crystal display panel corresponding to the touch area of the touch panel based on the position shift amount stored in the position shift amount storage means. The expanded position of the display data in the expanded data storage means, in display dot units of the liquid crystal display panel, The location correction.

Therefore, by correcting the expansion position of the display data in the expansion data storage means, the display data can be appropriately displayed at the position of the LCD corresponding to the touch position of the touch panel, and the touch circuit can be used for touching. The position and display position can be adjusted to an appropriate position. As a result, it is possible to reduce the cost of the display device with a touch panel, which has good operability in touch operation.

In each of the above cases, as described in claim 3, the entire display area of the liquid crystal display panel is divided into a plurality of display dot areas in the vertical and horizontal directions with respect to the entire touch area of the touch panel. If it is provided with a large size, the positional deviation between the liquid crystal display panel and the touch panel can be easily corrected by simply adjusting the display position on the liquid crystal display panel.

Further, as described in claim 4, when the position shift amount storage means stores the position shift amount as a display dot amount in the vertical / horizontal direction of the liquid crystal display panel, the liquid crystal display panel is displayed. The misalignment between the touch panel and the touch panel can be easily and quickly corrected in dot units on the liquid crystal display panel and displayed.

Further, as described in claim 5, when the positional deviation amount storage means stores the positional deviation amount as the positional deviation amount of the alignment mark between the liquid crystal display panel and the touch panel, The position shift amount storage means can be inexpensive and small, and the display device with a touch panel that can adjust the display position of the liquid crystal display panel according to the touch area of the touch panel can be inexpensive and small. .

When the position shift amount storage means stores the position shift amount as the shift amount of the display position of the display data for each touch area of the touch panel, the touch panel is touched. The positional deviation of the display data can be adjusted for each touch area, and the operability of the touch operation can be further improved.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of a display device with a touch panel according to the present invention.

FIG. 2 is a circuit diagram of the touch panel of FIG.

FIG. 3 is a top view showing a state where an LCD and a touch panel are superposed at appropriate positions.

FIG. 4 is a top view showing a state in which an LCD and a touch panel are overlapped at a displaced position.

FIG. 5 is a view showing alignment marks of the LCD and the touch panel in a state where the LCD and the touch panel are superposed at appropriate positions.

FIG. 6 is a view showing alignment marks of the LCD and the touch panel in a state where the LCD and the touch panel are superposed on each other in a displaced position.

FIG. 7 is a flowchart showing a process of storing a positional deviation amount in a position correction memory.

FIG. 8 is a flowchart of display processing by the display device with a touch panel according to the present embodiment.

FIG. 9 is a top view of the LCD and touch panel showing a state in which characters are displayed on the LCD after position correction.

FIG. 10 is a top view of a touch panel and an LCD used in a conventional display device with a touch panel.

11A is a top view of a conventional LCD, FIG. 11B is a top view of a conventional touch panel, FIG. 11C is a top view when the conventional LCD and the touch panel are superposed at appropriate positions, and FIG. The top view (d) when it is shifted and overlapped.

[Explanation of symbols]

 10 Display Device with Touch Panel 11 Main Unit 12 Interface Unit 13 Decoder 14 Memory Unit 15 LCD Drive Unit 16 LCD 16Ma, 16Mb Positioning Mark 17 Touch Panel 17a Upper Electrode Plate 17b Lower Electrode Plate 17Ma, 17Mb Positioning Mark 18 Control Circuit 19 Position Correction Memory 21 Character generator memory 22 DDRAM 23 Data conversion circuit 24 LCD drive circuit Ta Touch area

Claims (6)

[Claims] 1. A liquid crystal display panel having a plurality of display dots in a matrix, and a touch panel having a region larger than a minimum display unit dot of the liquid crystal display panel as a minimum recognition unit, the touch panel being superimposed on the liquid crystal display panel. When a touch area including at least one of the recognition units of the touch panel is touched, recognition / display of predetermined display data on the liquid crystal display panel at a position corresponding to the touch area is performed based on the touch information. In a display device with a touch panel including: display control means, a position shift amount storage means for storing a position shift amount of overlay of the liquid crystal display panel and the touch panel, and a position stored in the position shift amount storage means. The liquid crystal display panel corresponding to the touch area of the touch panel based on the shift amount. The display position of the display data to be displayed on the position, the liquid crystal display dots of the display panel, the touch panel display unit, characterized in that provided with position correction means for position correction, the. 2. A liquid crystal display panel having a plurality of display dots in a matrix, and a touch panel having a region larger than a dot of a minimum display unit of the liquid crystal display panel as a minimum recognition unit, the touch panel being superimposed on the liquid crystal display panel. Data storage means for storing display data, and a dot data storage area having a size corresponding to at least the display area of the liquid crystal display panel, storing correlation with the display area, and reading from the data storage means When the expanded data storage unit that expands and stores the displayed display data as dot data and the touch area including at least one or more of the recognition units of the touch panel are touched, the data storage unit outputs the touch data based on the touch information. The predetermined display data is read and the touched area of the expanded data storage means is touched. After developing as dot data at a position corresponding to the display area of the liquid crystal display panel corresponding to,
A display device with a touch panel, comprising: a recognition / display control unit to be displayed on the liquid crystal display panel; a position shift amount storage unit that stores a position shift amount of the overlay of the liquid crystal display panel and the touch panel; Based on the positional shift amount stored in the shift amount storage means, the expanded position in the expanded data storage means of the display data to be displayed at the position of the liquid crystal display panel corresponding to the touch area of the touch panel is set to the liquid crystal display panel. A display device with a touch panel, comprising: a position correction unit that corrects the position of each display dot. 3. The entire display area of the liquid crystal display panel,
The display device with a touch panel according to claim 1 or 2, wherein a plurality of display dot areas are provided in each of the vertical and horizontal directions with respect to the entire touch area of the touch panel. 4. The position shift amount storage means stores the position shift amount as a display dot amount in a vertical / horizontal direction of the liquid crystal display panel. Display device with a touch panel as described. 5. The position shift amount storage means stores the position shift amount as a position shift amount of a positioning mark between the liquid crystal display panel and the touch panel. The display device with a touch panel according to any one of the above. 6. The position shift amount storage means stores the position shift amount as a shift amount of a display position of display data for each touch area of the touch panel. A display device with a touch panel according to Crab.