JPH09160722A - Touch panel device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch panel device which can automatically collect the position correction voltage data without troubling user and also can automatically fetch the position correction voltage data out of a touch panel to detect an accurate position with improvement of its handling facility. SOLUTION: An upper resistance thin film for automatic position correction 2 of the similar characteristic to an upper resistance thin film for touch position detection 4 is formed between an upper glass 1 and the film 4. A lower resistance thin film for automatic position correction 6 of the similar characteristic to a lower resistance thin film for touch position detection 5 is formed between a lower glass 9 and the film 5. Then, the film 2 is directly connected to the film 6 via a pattern 8 included in a dot spacer 7, so that the position detection voltage is optionally taken out. Thereby, it is possible to automatically collect the position correction data and to detect an accurate position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper resistive thin film for detecting a touch position for detecting a touch position voltage between an upper glass which is thin enough to detect a touch position and a lower glass which is hard to break and sufficiently thick. The present invention also relates to a touch panel device, which is an anaguro touch switch in which lower resistive thin films for touch position detection are provided above and below, respectively.

[0002]

2. Description of the Related Art Conventionally, resistive thin films are arranged above and below, and a touch position is utilized by utilizing a voltage drop caused by contact between the upper and lower resistive thin films
An input device is a touch panel device which is an analog touch switch that determines the position detection by voltage.

[0003]

However, in the above-mentioned touch panel device, it is often encountered that the position cannot be accurately detected due to the change of the resistance value due to the surrounding environment (temperature or the like), which is a problem. Also,
Although there is a position correction method in which position adjustment is performed manually at fixed time intervals for alignment, the user has to manually perform position adjustment at fixed time intervals. Furthermore, when trying to automatically collect the position correction data, only the voltage data at the four corners of the touch panel device can be obtained, and the voltage data inside the touch panel cannot be obtained, and the position may shift in the middle of the touch panel (touch panel resistance characteristic There is also the problem that it is not necessarily linear).

The present invention has been made in view of the above circumstances, and the device automatically collects the position correction voltage data so that the position correction voltage data inside the touch panel does not bother the user. It is also an object of the present invention to provide a touch panel device that can be automatically taken in, accurately detect the position, and be a device that is easier to use.

[0005]

In order to achieve the above object, the present invention provides a touch position detecting upper resistance thin film for detecting a touch position voltage between an upper glass and a lower glass, and a touch position detecting lower resistance thin film. In a touch panel device in which resistive thin films are respectively provided on the upper and lower sides, an automatic position correcting upper resistive thin film having the same characteristics as the touch position detecting upper resistive thin film is provided between the upper glass and the touch position detecting upper resistive thin film. At the same time, a lower resistance thin film for automatic position correction having the same characteristics as the lower resistance thin film for touch position detection is provided between the lower glass and the lower resistance thin film for touch position detection. It is characterized in that a position detection voltage can be arbitrarily taken out by directly connecting to a lower resistance thin film for automatic position correction.

Further, a cushioning material is provided between the touch position detecting upper resistance thin film and the automatic position correcting upper resistance thin film, and between the touch position detecting lower resistance thin film and the automatic position correcting lower resistance thin film. Is provided.

A pattern connecting the upper resistance thin film for automatic correction and the lower resistance thin film for automatic correction separates the upper resistance thin film for touch position detection and the lower resistance thin film for touch position detection from each other. It is characterized in that it is provided inside an existing dot spacer.

Further, a plurality of the automatic correction upper resistance thin films and the automatic correction lower resistance thin films are provided by the same amount, respectively, so that a plurality of position correction voltage data can be taken in. Is.

With the above-mentioned structure, the upper resistance thin film for automatic position correction and the lower resistance thin film for automatic position correction can be directly connected to freely extract the position detection voltage.
By taking in the position voltage value of this position in a certain fixed time cycle, holding it as reference data, and calculating the actually pressed position using this reference data,
The position data of the central portion where the resistance distribution is not linear can be automatically fetched, and a more accurate pressing position can be detected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. In FIG. 1, the touch panel surface 2
The black squares at the four corners of 0 indicate voltage data that can be automatically captured. In addition, the voltage data in the center ⋄ indicates the position where data can be captured only automatically. In this embodiment, the voltage data indicated by ⋄ is automatically acquired.

FIG. 2 shows a sectional view of this embodiment when cut along the dotted line passing through the mark ⋄ shown in FIG. In the figure, 1 is an upper glass on the surface of the touch panel, and 2 below it is an upper resistance thin film for automatic position correction. Reference numeral 4 is an upper resistance thin film for touch position detection, and 5 is a lower resistance thin film for touch position detection. When the touch position detecting upper resistance thin film 4 and the touch position detecting lower resistance thin film 5 contact each other when pressed, the touch position can be detected by a voltage drop.

Reference numeral 6 denotes a lower resistance thin film for automatic position correction. 7
Is a dot spacer. 3 is an upper resistance thin film 2 for automatic position correction and an upper resistance thin film 4 for touch position detection, and a lower resistance thin film 5 for touch position detection and a lower resistance thin film 6 for automatic position correction.
Shows a cushioning material provided so as not to contact with each other.
Reference numeral 8 is a pattern connecting the upper resistance thin film 2 for automatic position correction and the lower resistance thin film 6 for automatic position correction. This pattern 8 includes the upper resistance thin film 4 for touch position detection and the lower resistance thin film 5 for touch position detection. It passes through the inside of the separated dot spacer 7. Therefore, it is not necessary to make an extra space for the pattern 8. At this time, it is assumed that the pattern 8 has no contact with the upper and lower touch position detecting resistive thin films.

FIG. 3 shows another embodiment in which the position correction voltage data at a plurality of points is fetched. The upper resistance thin film 2 for automatic position correction and the lower resistance thin film 6 for automatic position correction shown in FIG. 2 are provided up and down by the number of ⋄ marks on the touch panel surface 20 'in the figure. FIG. 4 shows an arrangement example of the resistive thin film.

4, reference numerals 10, 11, and 12 denote upper resistance thin films for automatic position correction corresponding to (A), (B), and (C) in FIG. 3, respectively, and 13, 14, and 15 in FIG. Represents the lower resistance thin film for automatic position correction corresponding to (A), (B), and (C) in FIG. 3, respectively, and as shown in FIG. It has been established. At this time, the pattern connecting the upper and lower resistance thin films does not make any contact with the resistance thin films other than the connected resistance thin films. Here, the resistance characteristic of each resistance thin film for automatic position correction is the same as that of the resistance thin film for touch position detection in both upper and lower directions. The pattern for connecting the upper and lower resistive thin films is the same as in FIG. 2, and as described above, it passes through the inside of the dot spacer at each position. Then, by taking in the position voltage values at these positions in a certain fixed time cycle, holding them as reference data, and calculating the actually pressed position using this reference data, the central resistance distribution is not linear. The position data of the portion can also be automatically fetched, and a more accurate pressed position can be detected.

[0015]

As described above, according to the present invention, the touch position correction voltage data is automatically fetched at an arbitrary time so that the manual operation can be performed without bothering the user. The position shift can be automatically corrected even if it is used for many hours. Further, by providing a cushioning material between the resistance position adjusting thin films, contact between the thin film resistors can be prevented. In addition, the pattern that connects the resistive thin films for automatic upper and lower position correction passes through the inside of the dot spacers. You can prevent making it. Further, by providing a plurality of automatic position correcting resistive thin films respectively on the upper and lower sides, a plurality of position correcting data can be automatically taken in for more accurate position detection.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view according to the present invention.

FIG. 2 is a sectional view of an embodiment according to the present invention.

FIG. 3 is another overall explanatory view according to the present invention.

FIG. 4 is a cross-sectional view of another embodiment according to the present invention.

[Explanation of symbols]

 1 Upper Glass 2 Upper Resistive Thin Film for Automatic Position Correction 3 Buffer Material 4 Upper Resistive Thin Film for Touch Position Detection 5 Lower Resistive Thin Film for Touch Position Detection 6 Lower Resistive Thin Film for Automatic Position Correction 7 Dot Spacer 8 Pattern 9 Lower Glass 10, 11, 12 Upper resistance thin film for automatic position correction 13, 14, 15 Lower resistance thin film for automatic position correction

Claims (4)

[Claims] 1. A touch panel device in which a touch position detecting upper resistance thin film for detecting a touch position voltage and a touch position detecting lower resistance thin film for detecting a touch position voltage are respectively provided above and below an upper glass and a lower glass. And an upper resistance thin film for automatic position correction having the same characteristics as the upper resistance thin film for touch position detection are provided between the upper resistance thin film for touch position detection and A lower resistance thin film for automatic position correction that has the same characteristics as the lower resistance thin film for touch position detection is provided between them, and position detection is performed by directly connecting the upper resistance thin film for automatic position correction and the lower resistance thin film for automatic position correction. A touch panel device characterized in that a voltage can be arbitrarily extracted. 2. A cushioning material between the touch position detecting upper resistance thin film and the automatic position correcting upper resistance thin film, and between the touch position detecting lower resistance thin film and the automatic position correcting lower resistance thin film, respectively. The touch panel device according to claim 1, further comprising: 3. A pattern connecting the upper resistance thin film for automatic correction and the lower resistance thin film for automatic correction separates the upper resistance thin film for touch position detection and the lower resistance thin film for touch position detection from each other. The touch panel device according to claim 1, wherein the touch panel device is provided inside an existing dot spacer. 4. The upper resistance thin film for automatic correction and the lower resistance thin film for automatic correction are provided in plural by the same amount, respectively, and are configured to be able to take in a plurality of position correction voltage data. Item 2. The touch panel device according to item 1.