JP2006338488A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of clearly expanding a screen partially by a simple operation. <P>SOLUTION: This display device is provided with a coordinate detection means 20, which is formed into a shape conforming a plane shape of a screen 10A in a cellular phone 1, and a control means. Based on the x value and the y value detected by the coordinate detection means 20 and a z value representing the coordinate position of the z direction serving as an approaching direction of a conductor to the coordinate detection means 20, the control means detects that a locus of an approach position intersects when the approach position of the conductor continuously moves on the coordinate detection means 20 and expands and displays information on the screen 10A corresponding to the inside of a selection frame surrounded by the locus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly, to a display device capable of enlarging and displaying information on a specific part of a screen in a display device such as a mobile phone, a navigation device, or a PDA (Personal Digital Assistant).

In recent years, in mobile phones, the amount of information displayed with respect to the size of the screen is becoming enormous. Therefore, the size of characters displayed on the screen is reduced to increase the amount of information displayed at a time on the screen. For this reason, it is difficult for the visually impaired and the elderly to read information displayed on the screen.

  Information that is received by the mobile phone is displayed on a screen enlargement display unit that is much larger than the screen of the mobile phone connected to the mobile phone (for example, see Patent Document 1), There is a lens that is bent and fixed so as to be positioned above the screen of the mobile phone (see, for example, Patent Document 2).

JP 2002-164968 A Japanese Patent Laid-Open No. 2003-179677

  However, in the device described in Patent Document 1 described above, since it is necessary to prepare a screen enlargement display unit different from the mobile phone and connect it to the mobile phone, the cost is high and the operation is complicated. .

  Moreover, although the thing of the patent document 2 mentioned above is curving a resin-made lens and fixing it above the screen of a mobile telephone, it cannot enlarge the screen of a mobile telephone clearly. It was.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile phone, a navigation device, and other display devices capable of enlarging a screen partly with a simple operation.

  In order to achieve the above object, a display device according to the present invention is characterized in that a display device is formed on a main body and has a screen for displaying information, and is embedded in the main body in a portion where the screen is not formed. The coordinate detection means formed in a shape corresponding to the planar shape of the screen, and the x value representing the coordinate position in the X direction on the plane detected by the coordinate detection means, and the coordinate position in the Y direction. Based on the y value and the z value representing the coordinate position in the Z direction, which is the proximity direction of the conductor to the coordinate detection means, the conductor is close to the coordinate detection means, and the proximity position of the conductor is the coordinates. It moves continuously on the detection means, detects that the trajectories of the proximity positions intersect, and enlarges and displays the information on the screen corresponding to the inside of the selection frame surrounded by the trajectories. In that it has a means.

  According to the display device of the present invention, the conductor is held over the coordinate detection means corresponding to the portion to be enlarged among the information displayed on the screen, and the portion corresponding to the portion to be enlarged in the information on the screen by this conductor. , The control means inputs the x value and y value of the position where the z value within the predetermined range is detected from the coordinate detection means, monitors the trajectory by continuous movement of the conductor, and crosses the trajectory. Can be monitored. Thereby, the control means can expand and display the information on the screen corresponding to the inside of the selection frame surrounded by the locus.

  Further, another display device according to the present invention is characterized in that the control means displays lines corresponding to the x value and the y value of the locus detected by the coordinate detection means on the screen.

  According to another display device of the present invention, when it is detected that the conductor is continuously moving with a z value within a predetermined range on the coordinate detection means, the conductivity detected by the coordinate detection means is detected. Lines corresponding to the x and y values of the body trajectory are displayed on the screen. Accordingly, the conductor can be moved to the range to be enlarged while confirming the movement position of the conductor on the screen, so that the range to be enlarged can be easily selected.

  Furthermore, another display device according to the present invention is characterized in that an operation key for inputting information to the display device is provided on the main body so as to overlap with the coordinate detection unit in a planar shape, and the control unit includes: A switching unit for turning on / off the function of enlarging the information is provided.

  According to the other display device according to the present invention, the information enlargement function in the main body is turned on / off by the switching unit, so that the information enlargement function and each operation key are pressed on the main body in duplicate in a planar shape. An information input function for inputting information can also be used, whereby the size of the display device can be reduced.

  As described above, according to each display device according to the present invention, the conductor is held over the coordinate detection means corresponding to the part to be enlarged among the information displayed on the screen, and the enlargement in the screen information is performed by this conductor. By a simple operation of enclosing a portion corresponding to a desired portion, information on a screen of a desired portion can be enlarged and displayed quickly and easily.

  First, an outline of a mobile phone as an embodiment of a display device of the present invention will be described.

  FIG. 1 is a conceptual diagram mainly showing the operation unit 11 in the main body 9 of the mobile phone 10. As shown in FIG. 1, a plurality of operation keys 12 having a general key arrangement are arranged on the operation unit 11. ing. As shown in FIG. 2, the operation unit 11 is configured by integrally combining an upper case 11A and a lower case 11B. A plurality of openings 11a, 11a... Are formed in the upper case 11A, and a key top 12a that is a surface of the operation key 12 is exposed to the outside through these openings 11a. Characters, symbols or figures are printed on the key top 12a.

  Each of the operation keys 12 is formed of a transparent or translucent resin, is formed as a key mat that is integrally connected via a hoop portion (not shown), and is elastic on the lower case 11B side (downward). It is in a deformable state. A columnar stem 12b is integrally formed on the back surface of each operation key 12, and each stem 12b extends downward.

  A circuit board 13 is fixed to the lower case 11B, and a plurality of electronic components 15 and a light source 14 are provided on the circuit board 13. The operation key 12 is arranged so that the tip of the stem 12b faces each electronic component 15.

  The electronic component 15 includes a metal reversal plate having a dome shape and a contact electrode, for example. A base end portion of the reversing plate is fixed to a ring-shaped electrode provided on the circuit board 13, and an inner surface of the reversing plate is opposed to the contact electrode. The reversing plate is reversed, and the inner surface of the reversing plate is brought into contact with the contact electrode, whereby the contact electrode and the ring-shaped electrode are electrically connected. The light source 14 is constituted by an LED or the like, and the light source 14 is provided around the electronic component 15.

  As shown in FIG. 2, coordinate detection means 20 is provided inside the operation unit 11, and the coordinate detection means 20 is fixed to the lower surface of the key mat via an adhesive 16. The coordinate detecting means 20 is formed in a rectangular shape as a whole so as to correspond to the shape of the rectangular screen 10A of the mobile phone 10.

  The coordinate detecting means 20 has a film-like base sheet 21 excellent in flexibility, and the base sheet 21 is preferably formed of a dielectric.

  As shown in FIG. 3, on one surface of the base sheet 21, a plurality of X detection electrodes 1x, 2x, 3x, 4x, which extend in the Y direction and are arranged at predetermined intervals in the X direction, 5x, 6x, and a plurality of common electrodes 1k, 2k, 3k, 4k, 5k that extend in the Y direction and have a predetermined interval in the X direction and are arranged between the individual X detection electrodes. They are wired so that they do not touch each other. Each of the common electrodes 1k, 2k, 3k, 4k, and 5k is connected to one at one end, and is drawn out to the outside of the base sheet 21 as the common electrode K.

  In addition, a plurality of Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y, and 7y that extend in the X direction and are arranged at predetermined intervals in the Y direction are provided on the other surface of the base sheet 21. , 8y are provided.

  A plurality of X detection electrodes 1x, 2x, 3x, 4x, 5x, 6x provided on one side of the base sheet 21, and a plurality of Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y provided on the other side , 7y, 8y are arranged so as to intersect each other vertically on both surfaces of the base sheet 21.

  The common electrodes 1k, 2k, 3k, 4k, and 5k are formed with a plurality of common branch electrodes 22 that extend linearly with a predetermined length toward both sides in the X direction. Each of the common branch electrodes 22 is provided so as to intersect the common electrodes 1k, 2k, 3k, 4k, and 5k at a predetermined interval in the Y direction. The tip basically extends to a position just before the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x.

  In each X detection electrode 1x, 2x, 3x, 4x, 5x, 6x, a plurality of first auxiliary electrodes 23 extending in parallel on both sides in the X direction are formed. The first auxiliary electrode 23 is basically formed by a pair of parallel electrodes 23a and 23b, and is spaced apart from each other in the Y direction by the X detection electrodes 1x, 2x, 3x, 4x, 5x, 6x. It is arranged to intersect. The tip of the common branch electrode 22 is inserted between one parallel electrode 23a and the other parallel electrode 23b forming the first auxiliary electrode 23, and the tip of the common branch electrode 22 is It arrange | positions so that it may oppose partially with respect to the parallel electrodes 23a and 23b.

  Each Y detection electrode 1y, 2y, 3y, 4y, 5y, 6y, 7y, 8y is formed with a second auxiliary electrode 24 extending in parallel on both sides in the Y direction. The second auxiliary electrode 24 is also basically formed by a pair of parallel electrodes 24a, 24b, and the Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y are spaced apart from each other in the X direction. , 7y, and 8y. The common electrodes 1k, 2k, 3k, 4k, and 5k are disposed so as to pass between a pair of parallel electrodes 24a and 24b.

  The base sheet 21 is formed with a hole 21a for allowing the stem 12b to pass therethrough and a hole 21b functioning as a passage for guiding the light emitted from the light source 14 to the back of the operation key 12. For this reason, the common electrode, the common branch electrode 22, the X detection electrode, and the Y detection electrode cannot be formed linearly on the base sheet 21, and a semicircular arc-shaped detour that avoids the hole 21a. 26 is partially formed.

  In such a coordinate detection means 20, as shown in FIG. 4, any one of the plurality of common electrodes 1k, 2k, 3k, 4k, 5k is used as a reference common electrode (in this embodiment, the common electrode 3k). Is the reference common electrode), the reference common electrode 3k and the adjacent X detection electrodes 3x, 4x are coupled with capacitances C1, C2, respectively. For this reason, when a pulsed voltage Vin is applied to the reference common electrode 3k using an oscillation means (not shown), the voltage Vin is applied to the X detection electrode 3x through the capacitance C1, and the X detection is also performed. The voltage Vin is applied to the electrode 4x through the capacitance C2.

  From this state, when a grounded conductor such as a finger is brought into contact with or close to the reference common electrode, a part of the dielectric flux generated between the reference common electrode 3k and the X detection electrodes 3x and 4x is Since it is pulled out to the conductor side, the capacitances C1 and C2 are reduced. For this reason, the X detection electrodes 3x and 4x output a detection voltage Vout corresponding to changes in the capacitances C1 and C2. The detection voltage Vout is output as a smaller voltage value as the distance between the conductor and the X detection electrode is shorter. That is, the voltage value output from the X detection electrodes 3x and 4x is the smallest, and the voltage values output from the other X detection electrodes 1x, 2x, and 5x remain large. Therefore, the coordinate detection means 20 determines the coordinate position of the conductor in the X direction by sequentially detecting the voltage values of the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x at a constant cycle. Is possible.

  Further, in such coordinate detection means 20, a total of seven sets of common branch electrodes 22 arranged in a row in the X direction are formed, and seven sets of common branch electrodes 22 arranged in a predetermined pitch in the Y direction. The Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y, 7y, and 8y provided therebetween are opposed to each other.

  Assuming that one of the seven sets of common branch electrodes 22 is a reference common electrode, the same electrostatic capacitance is also formed between the reference common electrode and two Y detection electrodes adjacent in the Y direction. ing. Therefore, as in the case of the X detection electrode, a pulse voltage Vin having a predetermined cycle is applied to the common electrode K side, and the detection is output from the Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y, 7y, and 8y. By sequentially detecting the voltage Vout at a predetermined cycle, the coordinate detection means 20 can determine the coordinate in the Y direction at the position where the conductor is close.

  Subsequently, a plurality of first auxiliary electrodes 23 formed on the X detection electrodes 1x, 2x, 3x, 4x, 5x, 6x, and Y detection electrodes 1y, 2y, 3y, 4y, 5y, 6y, 7y, 8y The operation of the plurality of second auxiliary electrodes 24 formed in FIG.

  Here, as shown in FIG. 5, one of the plurality of common electrodes 1k, 2k, 3k, 4k, and 5k is defined as a reference common electrode BK, and one side adjacent to the reference common electrode BK (for example, The X detection electrode positioned on the right side in FIG. 5 will be described as the first detection electrode XR, and the X detection electrode positioned on the other side (left side in FIG. 5) will be described as the second detection electrode XL. The first detection electrode XR and the second detection electrode XL are any two adjacent ones of the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x.

  In addition, a position where the tip of the common branch electrode 22 extending from the reference common electrode BK is opposed to the first auxiliary electrodes 23a and 23b extending from the first detection electrode XR is defined as the first Similarly, the end of the common branch electrode 22 extending in the X2 direction from the reference common electrode BK is disposed between the second auxiliary electrodes 23a and 23b extending from the second detection electrode XL. The place to be used is the second capacity adjustment unit 25B.

In the first auxiliary electrode and the second auxiliary electrode, the length dimension (opposing length dimension) of the portion where the parallel electrodes 23a, 23b and the common branch electrode 22 face each other is L, and the parallel electrodes 23a, 23b and the common branch electrode 22 are common branches. When the distance between the electrodes 22 is d, the dielectric constant of the substrate sheet 21 is ε, and the film thickness dimension of each electrode in the Z direction is δ (not shown), the capacitance in the first capacitance adjusting unit 25A C _A is a value of the following equation (Equation 1).

Similarly, the capacitance C _B in the second capacitance adjustment unit 25B can be expressed by the following equation (Equation 2).

Since the dielectric constant ε and the film thickness dimension δ of each electrode can be regarded as constant values, the capacitances C _A and C _B are both proportional to the opposing length dimension L between the electrodes.

Then, a plurality of such first capacitance adjusting sections 25A and second capacitance adjusting sections 25B are provided on both the left and right sides of one reference common electrode BK (seven in FIG. 3, but n here). Is provided. In addition, the capacitance existing between the reference common electrode BK and the first detection electrode XR is C1, and the capacitance existing between the reference common electrode BK and the second detection electrode XL is originally set. When C2, between the reference common electrode BK and the first detection electrode XR, it and the electrostatic capacitance C _a is formed in the first capacitance adjustment portion 25A of the n points and the capacitance C1 Since it is equivalent to existing in a state of being connected in parallel, the combined capacity CR during this period is CR = C1 + n · C _A. Similarly, between the reference common electrode BK and the second detection electrode XL, the capacitance C _B and parallel connection formed in the second capacitance adjustment portion 25B of the capacitance C2 and the n locations since it is equivalent to present in a state of being, during which the combined capacitance CL is _{CL = C2 + n · C B} .

  Here, when the predetermined voltage Vin is applied to the common electrodes 1k, 2k, 3k, 4k, and 5k and the detection voltage Vout is acquired from the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x, one A voltage Vin is applied to the X detection electrode from two common electrodes located on both sides thereof. For example, when a voltage is detected from the X detection electrode 2x, the voltage Vin acts from both the adjacent common electrode 1k and the common electrode 2k on the X detection electrode 2x. The capacitance C1 between the common electrode 1k and the X detection electrode 2x and the capacitance C2 between the common electrode 2k and the X detection electrode 2x are values connected in parallel (C = C1 + C2).

  Therefore, the total combined capacitance C between the reference common electrode BK, the first detection electrode XR, and the second detection electrode XL is a value of the following equation (Equation 3).

  That is, the static capacitance between the reference common electrode BK and the first detection electrode XR and the second detection electrode XL is formed by forming the plurality of first capacitance adjustment units 25A and the second capacitance adjustment units 25A and 25B. By increasing the electrical coupling and increasing the total combined capacitance C, it is possible to increase the variation in capacitance when the conductors are close to each other. For this reason, the change of the voltage value detected from each X detection electrode and Y detection electrode can be caught reliably, and the detection accuracy of the coordinate detection means 20 can be improved.

  In this way, the coordinate detection means 20 is an x value that represents the coordinate position in the X direction and the Y direction in the coordinate detection means 20 according to the change in the voltage value of each electrode due to the proximity of the conductor to the coordinate detection means 20, y The z value representing the value and the coordinate position in the Z direction, which is the close direction to the coordinate detection means 20 of the conductor, is detected.

  As shown in FIG. 6, the mobile phone 10 is provided with a control means 40 that controls each part of the mobile phone 10.

  Further, the control means 40 detects the z value within a predetermined range and monitors the proximity of the conductor, the continuous movement monitoring unit 46 that monitors the continuous movement of the conductor, and the continuous movement of the conductor. A crossover monitoring unit 47 that monitors the crossing of the trajectory, a display unit that displays, on the screen 10A, enlarged information of an image corresponding to the inside of the selection frame surrounded by the line corresponding to the trajectory and the trajectory crossing. 48.

  When the proximity monitoring unit 45 inputs from the coordinate detection means 20 that a z value within a predetermined range is detected, the proximity monitoring unit 45 determines that the conductor is close and inputs the proximity of the conductor to the continuous movement monitoring unit 46. It is supposed to be.

  When the proximity monitoring unit 45 inputs that the conductor has approached, the continuous movement monitoring unit 46 inputs the x value and the y value of the coordinate position where the z value within a predetermined range is detected from the coordinate detection unit 20, The continuous movement of the conductor is monitored. In addition, when the continuous movement monitoring unit 46 determines that the conductor is continuously moving due to the change of the x value and the y value from which the z value is detected, the continuous movement monitoring unit 46 determines the coordinate position where the conductor is continuously moving. The x value and the y value are stored in the memory 41, and the fact that the conductor is continuously moving is input to the intersection monitoring unit 47 and the display unit 48.

  When the crossing monitoring unit 47 inputs that the conductor is continuous from the continuous movement monitoring unit 46, the crossing monitoring unit 47 inputs the x value and the y value from which the z value within a predetermined range is detected from the coordinate detection unit 20, It is designed to monitor the crossing of trajectories due to continuous body movement. Further, when the intersection monitoring unit 47 determines that the locus has crossed based on the x value and the y value from which the z value is detected, the intersection monitoring unit 47 inputs the fact that the locus has intersected to the display unit 48. .

  When the display unit 48 inputs from the intersection monitoring unit 47 that the locus has intersected, the information on the screen 10A corresponding to the inside of the selection frame is enlarged and displayed.

  Further, when the display unit 48 inputs that the conductor is continuously moving from the z continuous movement monitoring unit 46, the display unit 48 extracts the x value and the y value indicating the coordinate position where the conductor is continuously moving from the memory 41, A line corresponding to the x value and the y value is displayed on the screen 10A.

  Furthermore, the control means 40 is provided with a switching unit 43 for turning on / off the information expansion function, and the switching unit 43 provides information when the on key 12n, which is one of the plurality of operation keys 12, is pressed. The enlargement function is turned on, and the information enlargement function is turned off when the off key 12f, which is another one of the operation keys 12, is pressed. Note that another key 12 may be assigned for this information expansion function, or a new key may be provided.

  Then, when the information enlargement function is turned on when the on key 12n is pressed, the coordinate detection unit 20 is desired to enlarge information on the screen 10A of the mobile phone 10 on which the information is displayed. The coordinates of the position of the conductor can be detected by bringing a conductor such as a finger close to a specific part on the operation unit 11 of the mobile phone 10 corresponding to the above.

  Next, a method for enlarging information on the screen 10A in the mobile phone 10 will be described with reference to FIGS.

  As shown in FIG. 7, first, when the on key 12n is pressed, the proximity monitoring unit 45 of the control unit 40 monitors the z value within a predetermined range within the predetermined range by the coordinate detection unit 20 (ST1).

  Subsequently, as shown in FIG. 8A, when the proximity monitoring unit 45 inputs that the z value within a predetermined range is detected by the coordinate detection unit 20 by bringing the conductor close to the operation unit 11. (ST2), the proximity monitoring unit 45 inputs that the z value is detected to the continuous movement monitoring unit 46, and the continuous movement monitoring unit 46 detects the x value from which the z value is detected from the coordinate detection means 20, and The y value is input to monitor whether the conductor continuously moves (ST3).

  Next, as shown in FIG. 8B, when the conductor is moved in the state of being close to the operation unit 11, the coordinate detection means 20 causes the x of the coordinate position where the z value within a predetermined range is detected. The continuous movement monitoring unit 46 detects the value and the y value, and if the x value and the y value input from the coordinate detection unit 20 are adjacent coordinate positions on the coordinate detection unit 20, the conductor is It is determined that the plane shape has moved continuously (Yes in ST3). The continuous movement monitoring unit 46 stores the x value and the y value of the position where the conductor is continuously moving in the memory 41, and also indicates that the conductor is continuously moving, the crossing monitoring unit 47 and the display unit 48. To enter.

  Then, the display unit 48 extracts the x value and the y value indicating the position where the z value continuously moves from the memory 41, and displays a line corresponding to the x value and the y value on the screen 10A (ST4). Further, the intersection monitoring unit 47 inputs the x value and the y value of the coordinate position where the z value within a predetermined range is detected from the coordinate detection means 20, and monitors whether the conductor trajectories intersect (ST5). ).

  Further, as shown in FIG. 8C, the intersection monitoring unit 47 allows the conductors input from the coordinate detection unit 20 to cross each other by crossing the locus of the conductors in a state where the conductors are brought close to the operation unit 11. If the coordinate position of the x value and y value of the locus overlaps, it is determined that the locus intersects (Yes in ST5).

  Then, the intersection monitoring unit 47 inputs the fact that the trajectories have intersected to the display unit 48, and the display unit 48 displays the information on the screen 10A corresponding to the inside of the frame as shown in FIG. The display is enlarged for a predetermined time depending on the magnification (ST6). The magnification of this information can be set to 125, 150, 175, and 200%, but various settings can be made for this magnification.

  Then, the display unit 48 enlarges and displays the information on the screen 10A for a predetermined time on the screen 10A, and then displays the screen 10A by displaying the original magnification. The proximity monitoring unit 45 turns on the information enlargement function. In the state, the change in the z value is continuously monitored (ST1).

  Further, when the intersection monitoring unit 47 does not confirm that the trajectories intersect within a predetermined time (No in ST5), the proximity monitoring unit 45 does not intersect the trajectory of the conductor continuously moved to the display unit 48. The display unit 48 cancels the display of the line on the screen 10A corresponding to the locus (ST7).

  Further, when the continuous movement monitoring unit 46 inputs a change in the z value from the coordinate detection unit 20 and determines that the conductor is separated from the coordinate detection unit 20 (No in ST3), the continuous movement monitoring unit 46 performs the continuous movement of the conductor. Monitoring is stopped (ST8). On the other hand, when the z value does not change, the continuous movement monitoring unit 46 continuously monitors the continuous movement of the conductor.

  According to the present embodiment, the coordinate detection unit 20 can detect the x value, the y value, and the z value of the coordinate position of the conductor on the operating body 11 and input the detected value to the control unit 40. Further, when a z value within a predetermined range is detected by the coordinate detection means 20, the control means 40 performs monitoring of the continuous movement of the conductor, monitoring of the path by this continuous movement, and monitoring of the intersection of the path, When the conductor trajectories intersect on the coordinate detection means 20, the information on the screen 10A corresponding to the inside of the selection frame surrounded by the trajectories can be enlarged and displayed.

  Therefore, a finger as a conductor is placed over the coordinate detection means 20 corresponding to the part to be enlarged in the information displayed on the screen 10A, and the part corresponding to the part to be enlarged in the information on the screen 10A is surrounded by this finger. With this simple operation, information on the screen 10A of a desired portion can be enlarged and displayed quickly and easily.

  When it is detected that the conductor is continuously moving on the coordinate detection means 20 with a z value within a predetermined range, the x value and y value of the locus of the conductor detected by the coordinate detection means 20 are detected. Since the line corresponding to is displayed on the screen 10A, it can be displayed on the screen 10A. As a result, the conductor can be moved to the range to be enlarged while confirming the movement position of the conductor on the screen 10A, so that the range to be enlarged can be easily selected.

  Furthermore, since the control means of the mobile phone 10 has the switching unit 43 for turning on / off the function of enlarging the information displayed on the screen 10A, the on-key 12n or the off-key 12f is pressed and the operation unit 11 is operated by the switching unit 43. By turning on / off the information expansion function in, the operation unit 11 can be used both as an information expansion function and an information input function for inputting information by pressing each operation key 12. Thereby, size reduction of the mobile telephone 1 can be achieved.

  In addition, this invention is not limited to the said embodiment, A various change is possible as needed.

  For example, in the above-described embodiment, the voltage Vin is applied to the common electrode K, and the detection voltage Vout is detected from the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x sides. However, the detection voltage Vout may be detected from the common electrode K by applying the voltage Vin to the X detection electrodes 1x, 2x, 3x, 4x, 5x, and 6x sides.

  In the above-described embodiment, the coordinate detection unit 20 is not limited to the configuration of the present embodiment, and various coordinate detection units 20 can be used. For example, the electrode pattern formed on one surface of the substrate sheet 21 is a common electrode and an X detection electrode, and the electrode pattern formed on the other surface is a Y detection electrode. The electrode pattern formed on one of the surfaces may be used as the common electrode and the Y detection electrode, and the electrode pattern formed on the other surface may be used as the X detection electrode. Further, a configuration in which the electrode pattern formed on the one surface is a Y detection electrode and the electrode pattern formed on the other surface is an X detection electrode, that is, a configuration in which the X detection electrode and the Y detection electrode are switched. It may be. Furthermore, the first auxiliary electrode 23 and the second auxiliary electrode 24 may not be provided.

  In the above-described embodiments, the display device of the present invention has been described with a mobile phone. However, it goes without saying that the display device of the present invention can be applied not only to a mobile phone but also to a navigation device, a PDA, and other display devices. Further, the information to be enlarged is not limited to character information alone, and may be image information such as a map or composite information of characters and images.

The top view which shows one Embodiment of the display apparatus which concerns on this invention Sectional view taken along line II-II in FIG. The top view which shows the electrode pattern formed in the base material sheet which comprises the coordinate detection means used for this invention The top view which expands and shows the reference | standard common electrode in the base material sheet | seat of FIG. 3, and two X detection electrodes adjacent to this The top view which expands and shows the relationship between the common branch electrode provided in the common electrode used as the reference | standard in the base material sheet | seat of FIG. 3, and the parallel electrode provided in the adjacent X detection electrode The block diagram which shows the control means of the display apparatus of FIG. The flowchart which shows the method of expanding and displaying the information on a screen in the display apparatus of FIG. (A) (b) (c) (d) is a top view which shows the process of expanding and displaying the information of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Mobile phone 10A Screen 11 Operation part 12 Operation key 12a On key 12b Off key 20 Coordinate detection means 40 Control means 41 Memory 43 Switching means 45 Proximity monitoring part 46 Continuous movement monitoring part 47 Intersection monitoring part 48 Display part

Claims (3)

A display device formed on the main body and having a screen for displaying information,
Coordinate detecting means embedded in the main body of the part where the screen is not formed and formed in a shape corresponding to the planar shape of the screen;
The x value representing the coordinate position in the X direction on the plane detected by the coordinate detection means, the y value representing the coordinate position in the Y direction, and the coordinate position in the Z direction, which is the proximity of the conductor to the coordinate detection means. Based on the z value represented, it is detected that the conductor is close to the coordinate detection means, the proximity position of the conductor is continuously moved on the coordinate detection means, and the locus of the proximity position intersects. And a control means for enlarging and displaying the information on the screen corresponding to the inside of the selection frame surrounded by the trajectory.   The display device according to claim 1, wherein the control unit displays lines corresponding to the x value and the y value of the trajectory detected by the coordinate detection unit on the screen. In the main body, operation keys for inputting information to the display device are provided so as to overlap with the coordinate detection means in a planar shape,
The display device according to claim 1, wherein the control unit includes a switching unit that turns on and off a function of enlarging the information.

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