JP2001125710A - Operation display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clearly watch display information on a display after hiding an unwanted part on the back side of a touch panel concerning an operation display device having the touch panel having the sense of high quality with a glass substrate as a base. SOLUTION: Concerning a touch panel 10 of an operation display device 3 with a transparent glass substrate 11 as a base, a configuration for improving the sense of high quality is adopted but concerning trouble caused by using the transparent glass substrate 11, a half mirror film 14 is formed so that a circuit board 30 or display 20 located from the front side of the touch panel 10 to the back side prevented from seeing through. Further, concerning information emitted and displayed on the display 20 located on the back side of the touch panel 10. The information can be watched on the front side by the characteristics of the half mirror film 14 so that visibility concerning display information can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an operation display device using a touch panel based on a glass substrate.
This operation display device is used for various electronic devices other than a microwave oven.

[0002]

2. Description of the Related Art Conventionally, as an operation display device of an electronic device, a touch panel in which a plurality of keys are provided in a matrix on a front surface side of a synthetic resin substrate, and a key corresponding to an operation when the keys of the touch panel are touch-operated. A circuit board that outputs required signals to a control device such as a microcomputer, and a liquid crystal (LC) that is provided at a required position on the surface of the touch panel and displays various information such as current time and heating temperature.
D) and a display such as a segment LED.

Some operation display devices having such a configuration use a glass substrate as the base of the touch panel because the touch panel has a low-grade feel because the base of the touch panel is a synthetic resin substrate.

In this touch panel based on a glass substrate, the surface of the glass substrate is flattened, and a front electrode serving as a key is printed in a matrix on the surface, and a back electrode having the same pattern as the front electrode is also formed on the back surface. By printing, when a person touches the front electrode, the change in the dielectric constant that occurs between the electrodes on the front and back surfaces sandwiching the glass substrate is detected, and the control device such as a microcomputer recognizes the presence or absence of key operation. I have.

[0005]

By the way, in the above-mentioned conventional example, the display is arranged on the back side of the touch panel based on the glass substrate. However, since the glass substrate is transparent, the display is performed on the display. Although it is possible to show only information such as letters and numbers, it is pointed out that the appearance is poor such that unnecessary parts of the display can be seen through.

On the other hand, it is conceivable to apply a blind-coating pattern on the back surface of the glass substrate so that only the display area of the display device is locally seen, but the unobstructed area is still transparent. However, when viewed from the side, unnecessary parts can be seen, which is not a sufficient measure. There is room for improvement here.

In view of such circumstances, the present invention relates to an operation and display device having a touch panel having a high-class feeling based on a glass substrate, and an unnecessary portion on the back side of the touch panel is blindfolded and the display information of the display is displayed. Is intended to be clearly visible.

[0008]

A first operation display device according to the present invention outputs a required signal when a human touch operation is received, and also emits and displays information in a required area. A front electrode on which a front electrode serving as a touch key is formed, and a back electrode on which a front electrode and a pair of back electrodes are formed on a back surface, and a front electrode of the touch panel which is disposed on the back surface of the touch panel at a required distance from the touch panel. A circuit board that outputs a command signal assigned to each touched front electrode due to a change in the dielectric constant generated between the electrodes on the front and back sides of the glass substrate when touched, and arranged on the back side of the touch panel A display for emitting and displaying information such as numbers and characters to be displayed, and a non-conductive half mirror film on the entire back surface of the glass substrate serving as the base of the touch panel. Is formed, it is characterized in that.

The second operation display device of the present invention outputs a required signal when a human touch operation is received, and also emits information in a required area, and serves as a touch key on the surface of the glass substrate. A front electrode, and a touch panel in which a back electrode that is paired with the front electrode is formed on the back surface,
A front electrode that is arranged on the back side of the touch panel at a required distance and that is touch-operated due to a change in the dielectric constant generated between the electrodes on the front and back sides of the glass substrate when the front electrode of the touch panel is touch-operated A circuit board that outputs a command signal assigned to the touch panel, and a display that is disposed on the back side of the touch panel and emits and displays information such as numbers and characters to be displayed, and a glass substrate that is a base of the touch panel. A non-conductive half-mirror film is formed on at least a region corresponding to the display on the back surface, and a non-conductive blindfold film for concealing the back side is formed in the entire region except for the region where the half-mirror film is formed. , Is characterized.

A third operation display device according to the present invention is characterized in that, in the first configuration, the back electrode of the touch panel is formed on a half mirror film.

In short, according to the present invention, a half mirror film is formed in a required area on the back side of a touch panel based on a high-quality glass substrate, so that the display device disposed on the back side of the touch panel is turned on the front side. It is possible to clearly show the information such as numbers and characters to be illuminated and displayed on the display side on the front side while not showing it.

By forming a blind film on the back side of the touch panel, the appearance of the circuit board disposed on the back side of the touch panel is not reliably shown on the front side.

Further, by making the half-mirror film and the blind film non-conductive, it is possible to avoid short circuit of each of the plurality of back electrodes.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on embodiments shown in the drawings.

FIG. 1 to FIG. 5 show an embodiment of the present invention. Here, a microwave oven is taken as an example. FIG.
Is a perspective view showing the appearance of the microwave oven, FIG. 2 is a block diagram of the configuration of the microwave oven, FIG. 3 is a front view of the operation display device of the microwave oven, FIG. 4 is a longitudinal sectional view of the operation display device, and FIG.
FIG. 5 is an enlarged view of a main part of FIG. 4.

As shown in FIG. 2, the microwave oven 1 shown in FIG. 1 includes a heating device 2, an operation display device 3, and a control device 4.

The heating device 2 uses a commercial power supply to drive a heating source such as a heater or a magnetron to heat and cook the cooking material contained in the heating chamber (reference number omitted) of the range case 5. .

The operation display device 3 is provided on one side of an opening / closing door 6 provided on the front surface of the range case 5, and outputs a required signal corresponding to a touch operation by a user to the control device 4. , Information including characters and symbols such as the current time and the names of a plurality of automatic cooking courses. The operation display device 3 includes a touch panel 10
, A display 20, and a circuit board 30. These configurations will be described later.

The control device 4 comprises a microcomputer, controls the heating operation of the heating device 2 in response to a command signal input from the operation display device 3, and controls the operation display device 3.
Is to control the display operation on the display 20.

Next, the components of the operation display device 3 will be described.

In the touch panel 10, a front electrode 12 serving as a key is printed in the form of a matrix on a front surface of a transparent glass substrate 11 having flat front and back surfaces, and a back electrode 13 having the same pattern as the front electrode 12 is printed on the back surface. It has a configuration. The front electrode 12 is made of platinum or the like, and the back electrode 13 is
Such as silver carbon.

The display 20 has a segmented LED structure in which LEDs are embedded in the form of numbers or characters to be displayed on a rectangular substrate, and is mounted on a required area of a circuit board 30 described below.

The circuit board 30 is disposed on the rear surface of the touch panel 10 at a required distance from the rear surface of the touch panel 10. A plurality of the circuit boards 30 are pressed against the back electrodes 13 of the touch panel 10 respectively. Elastic metal terminal 31
Is provided, and when a front electrode 12 of the touch panel 10 is touched by a person, a change in the dielectric constant occurring between the electrodes 12 and 13 on the front and back surfaces of the glass substrate 11 is detected, and this detection is performed. A circuit element for outputting a command signal corresponding to the selected key to the control device 4 is mounted. Note that the control device 4 performs a corresponding process according to the command signal.

The feature of this embodiment is that the touch panel 10
Is that the entire surface of the rear surface of the transparent glass substrate 11 is covered with a half mirror film 14 for making the back side difficult to see from the front side.

The half mirror film 14 is made of a material having an insulating property, such as, for example, reflight bronze (trade name) manufactured by Nippon Sheet Glass Co., Ltd.

The entire area of the half mirror film 14 except for the area corresponding to the outer shape of the display 20 is covered with a black blind film 15 for covering the circuit board 30 on the back side. . The plurality of back electrodes 13 described above are formed on the blind film 15, and the blind film 15 is made of a non-conductive material in order to reliably electrically insulate and separate each of the plurality of back electrodes 13. It is formed by printing or the like.

In such a touch panel 10, the state of the back side is completely invisible from the front side. However, when information is displayed on the display 20 mounted on the circuit board 30 on the back side, only the emitted information is displayed. Can be seen through on the front side of the touch panel 10.

The operation display device 3 configured as described above
Now, for the touch panel 10, the transparent glass substrate 11
The disadvantages of using the transparent glass substrate 11 while adopting a configuration that enhances a sense of quality based on the touch panel 10 can be solved by forming the half mirror film 4 and the blindfold film 15 from the front side of the touch panel 10. A circuit board 30 and a display 20 disposed on the
The device is designed to prevent seeing through and enhance the design. As described above, even if the display device 20 disposed on the back side of the touch panel 10 is prevented from being seen through from the front side by the half mirror film 14, the display device 20 does not
Since the information to be displayed by light emission becomes visible on the front side due to the characteristics of the half mirror film 14, the visibility of the display information is secured.

The touch operation of the touch panel 10 is configured such that key input can be performed by simply touching the touch panel 10. Therefore, compared to the case where a conventional press-type key is used, a touch operation is performed.
A device has been devised to enhance user operability and operational sensation.

In addition, by attaching the touch panel 10 based on the glass substrate 11 having a flat surface to the surface of the microwave oven 1, the design of the appearance of the microwave oven 1 can be improved.

In the above embodiment, the operation display device 3
Has been described in a form used in a microwave oven, but the operation display device 3 can be used in various electronic devices other than the microwave oven.

[0032]

According to the present invention, a half mirror film is formed on a touch panel based on a transparent glass substrate while employing a configuration for enhancing a sense of quality while using a transparent glass substrate. Thereby, the circuit board and the display device disposed on the back side of the touch panel from the front side of the touch panel are prevented from being seen through, and the design is enhanced. In this way, even if the display disposed on the back side of the touch panel is prevented from being seen through from the front side by the half-mirror film, the information displayed by the light-emitting display on the display can be seen on the front side from the characteristics of the half-mirror film. , Visibility of the display information is ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a microwave oven according to an embodiment of the present invention.

FIG. 2 is a configuration block diagram of a microwave oven.

FIG. 3 is a front view of the operation display device of the microwave oven.

FIG. 4 is a longitudinal sectional view of the operation display device.

FIG. 5 is an enlarged view of a main part of FIG. 4;

[Explanation of symbols]

 Reference Signs List 3 operation display device 10 touch panel 11 glass substrate 12 front electrode 13 back electrode 14 half mirror film 15 blindfold film 20 display 30 circuit board

Claims (3)

[Claims] 1. An operation display device that outputs a required signal when a human touch operation is received and emits and displays information in a required area, wherein a front electrode serving as a touch key is provided on a surface of a glass substrate, Also, a touch panel in which the front electrode and a pair of back electrodes are respectively formed on the back surface, and a glass substrate which is disposed on the back surface side of the touch panel at a required interval and when the front electrode of the touch panel is touch-operated. A circuit board that outputs a command signal assigned to each front electrode that has been touch-operated due to a change in the dielectric constant that occurs between the electrodes on the front and back surfaces, and numbers and characters that are arranged on the back side of the touch panel and that are displayed. A display that emits and displays the information of the touch panel, wherein a non-conductive half mirror film is formed on the entire back surface of the glass substrate that is the base of the touch panel. Operation display device. 2. An operation display device for outputting a required signal when a human touch operation is received, and for emitting and displaying information in a required area, wherein a front electrode serving as a touch key is provided on a surface of a glass substrate, Also, a touch panel in which the front electrode and a pair of back electrodes are respectively formed on the back surface, and a glass substrate which is disposed on the back surface side of the touch panel at a required interval and when the front electrode of the touch panel is touch-operated. A circuit board that outputs a command signal assigned to each front electrode that has been touch-operated due to a change in the dielectric constant that occurs between the electrodes on the front and back surfaces, and numbers and characters that are arranged on the back side of the touch panel and that are displayed. A display that emits and displays the information of the non-conductive half-metal on at least a region corresponding to the display on the back surface of the glass substrate that is the base of the touch panel. An operation display device, wherein a color film is formed, and a non-conductive blindfold film for concealing the back side is formed in the entire area except for the area where the half mirror film is formed. 3. The operation display device according to claim 1, wherein the back electrode of the touch panel is formed on a half mirror film.