JPH0487226A - Touch panel - Google Patents

Abstract

PURPOSE:To more finely control the speed of zoom motion of an image plane by providing a pressure detecting part consisting of a piezoelectric rubber seat on the back surface of a lower insulating base having an electrode formed on the surface. CONSTITUTION:Rectangular lower electrodes 2 provided in plurality on a lower insulating base 1 such as a glass plate or acryl plate are formed by evaporating ITOP, and rectangular upper electrodes provided in plurality on a flexible upper insulating base 3 such as a polymer film are crossed at right angles to the lower electrodes 2. The insulating base 3 is laminated on the insulating base 1 through a spacer 5 provided on the peripheral part. A pressure detecting part 6 consisting of piezoelectric rubber seat is provided on the back surface of the lower insulating base 1. When an optional point of the touch surface 8 of the insulating base 3 is pressed, an electric signal can be sent according to the pressed point, and according to this, an electric signal according to the strength of the pressing force can be sent by the piezoelectric rubber seat 6. Thus, the speed of zoom motion of an image plane can be more finely controlled.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to touch panels.

(Prior Art) A touch panel is installed on the surface of a display such as a CRT display or a liquid crystal display, and is used as an information input device or a coordinate indicating device.

This conventional touch panel has a structure in which, for example, a lower insulating substrate with electrodes formed on its surface and an upper insulating substrate with electrodes formed thereon are laminated with the adhesive side interposed via a spacer. .

(Problems to be Solved by the Invention) However, in the conventional touch panel, only one signal is transmitted when one place on the touch surface is pressed.

Therefore, up to 'i', there was a drawback that it was not possible to change the screen zoom operation, page turning operation, or the speed at which a part of the screen was moved vertically and horizontally.

SUMMARY OF THE INVENTION An object of the present invention is to provide a touch panel that improves the above-mentioned drawbacks and allows finer control of the speed of screen zooming and the like.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a touch panel in which insulating substrates having electrodes formed on their surfaces are laminated with a spacer interposed therebetween, in which a pressure detection section is provided on the back surface. It provides a touch panel with special features.

(Function) By providing piezoelectric rubber sheets and pressure gauges at the four corners and surrounding areas of the back surface, when the front and back sides of the touch panel are pressed, the pressed location can be detected, and the pressing force can be detected by the piezoelectric rubber sheets, etc. can. Therefore, a signal converted by a piezoelectric rubber sheet or the like can be transmitted from the touch panel to a device that uses the touch panel as a switch. This signal can be changed by the force with which the touch surface is pressed, allowing the device to operate more precisely in an analog manner.

(Example) Hereinafter, the present invention will be explained based on examples.

1 is a lower insulating substrate such as a glass plate or an acrylic plate.

Reference numeral 2 denotes a rectangular lower electrode provided in a plurality of strips on the insulating substrate 1, and is formed by vapor depositing ITO or the like. 3 is a flexible upper insulating substrate such as a polymer film. 4
is a rectangular upper electrode provided in plural strips on this insulating substrate 3, and intersects the lower electrode 2 at right angles. The insulating substrate 3 is laminated with spacers 5 disposed at the periphery behind the insulating substrate. Reference numeral 6 denotes a pressure detection section made of a piezoelectric rubber sheet pasted with adhesive on the surface of the lower insulating substrate 1, and is provided at the periphery as shown in FIG. 2 or at the four corners as shown in FIG. .

7 is a substrate on which the insulating substrate 1 is placed with the piezoelectric rubber sheet 5 interposed therebetween.

According to the above embodiment, when an arbitrary point on the touch surface 8 of the insulating substrate 3 is pressed, it is possible to send an electric signal corresponding to the pressed point, and in addition, the piezoelectric rubber sheet 5 can reduce the pressing force. It is also possible to send electrical signals depending on the strength.

Note that FIG. 4 shows another embodiment of the present invention, in which pressure detecting sections 10 consisting of pressure gauges are provided at the four corners of the insulating substrate 9 of the F section.

(Effects of the Invention) As described above, according to the present invention, since a piezoelectric rubber sheet, a pressure gauge, etc. are provided on the back surface of the lower insulating substrate, the strength of the pressing force on the touch surface can be detected, and the ,
A touch panel that allows more detailed control of screen zoom operations and the like can be obtained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIGS. 2 and 3 are back views of a lower insulating substrate, and FIG. 4 is a cross-sectional view of another embodiment of the present invention. 1.3.9... Insulating substrate, 2.4... Electrode, 6.
10...Pressure detection section. Figure 1 Figure 2 Patent ratio v person Hitachi Capacitor Co., Ltd. Figure 3 Figure 4

Claims (1)

[Claims] (1) A touch panel in which insulating substrates having electrodes formed on their surfaces are laminated with spacers interposed therebetween, characterized in that a pressure detection section is provided on the back surface.