JPH07319623A - Touch panel type liquid crystal display - Google Patents

Abstract

PURPOSE:To provide a touch panel liquid crystal display with good operability which eliminates a mistouch and enables even a visually handicapped person to recognize a key position. CONSTITUTION:A transparent sheet 6 which has projection parts 7a-7e on its surface corresponding to key positions 5a-5e of a touch panel 5 is provided on the touch panel 5. Consequently, the key positions 5a-5e of the touch panel 5, i.e., points which should be touched, can distinctively be indicated with the projection parts 7a-7e of the transparent sheet 6. Consequently, an operator can surely touch a target key position with a finger tip judging from the projection part at the key position as the reference. Further, even a visually handicapped person can recognize the key positions 5a-5e of the touch panel 5 by the projection parts 7a-7e of the transparent sheet 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel type liquid crystal display which is installed in various equipment such as an image forming apparatus and which is operated by touching a touch panel on a liquid crystal display screen with a fingertip.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing the structure of a conventional touch panel type liquid crystal display.

As shown in the figure, this liquid crystal display includes a liquid crystal display plate 2, a switch plate 3 and a touch panel 5 on a substrate 1.
And are sequentially laminated.

In this type of liquid crystal display, operation guides are displayed on the liquid crystal display plate 2, and a predetermined key position on the touch panel 5 is touched with a fingertip to turn on a corresponding switch portion of the switch plate 3.
Operate the device.

[0005]

However, in the conventional touch panel type liquid crystal display as described above, the key positions of the touch panel 5 are displayed on the liquid crystal display plate 2, but the points to be touched are ambiguous, and therefore the operation is performed. There was a case where the person got lost in the target key position or had to touch it again several times. Further, when a plurality of key positions are close to each other, a finger touches an adjacent key position, which may result in a wrong device operation. Then, such a mistouch increases downtime.

Further, the visually impaired person cannot recognize the key position on the touch panel 5 and cannot operate the device.

The present invention has been proposed in order to solve such a problem, and it is a touch panel type liquid crystal which has no erroneous touch and is capable of recognizing a key position even for a visually impaired person, and which has good operability. It is intended to provide a display.

[0008]

In order to achieve the above object, in the touch panel type liquid crystal display according to the present invention, the touch panel (5) is mounted on the touch panel (5).
Projections (7a-7) corresponding to the key positions (5a-5e) of
A transparent sheet (6) having e) on its surface was provided.

[0009]

By providing the transparent sheet (6) on the touch panel (5), the key positions (5a to 5e) of the touch panel (5), that is, the points to be touched, are projected (7a) on the transparent sheet (6). ~ 7e) can be clearly shown. Therefore, the operator can change the target key position to
By using the convex portion on the key position as a target, it is possible to surely touch with a fingertip without getting lost.

Further, even visually impaired persons can recognize the key positions (5a to 5e) of the touch panel (5) by the convex portions (7a to 7e) of the transparent sheet (6).

The reference numerals in the parentheses are for reference to the drawings and do not limit the structure of the present invention.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing the structure of a touch panel type liquid crystal display according to the present invention. In addition, in FIG. 1, the components which are not different from the conventional example shown in FIG.
The same reference numerals are given.

As shown in the figure, this liquid crystal display includes a liquid crystal display plate 2, a switch plate 3 and a touch panel 5 on a substrate 1.
And is sequentially laminated, and the characteristic is that a transparent sheet 6 is provided on the touch panel 5. The transparent sheet 6 has convex portions 7 corresponding to the key positions of the touch panel 5 formed on the surface thereof.

FIG. 2 is a plan view of a liquid crystal display according to the present invention when it is configured as an operation panel of an image forming apparatus (copier).

As shown in the figure, on the touch panel 5, key positions 5a to 5c of "koku", "AE", and "light" for density adjustment are arranged in a horizontal row in the center and for indicating the state. "End" and "OK" key positions 5d and 5e
Are located above and below the right corner. Then, on the transparent sheet 6 provided on the touch panel 5, “+”, respectively, corresponding to each of the key positions 5a to 5e.
Convex portions 7a to 7e forming letters and symbols of "A", "-", "E", and "OK" are formed.

Such a transparent sheet 6 is attached to the touch panel 5
By providing it above, the key positions 5a to 5e of the touch panel 5, that is, the points to be touched can be clearly shown by the convex portions 7a to 7e of the transparent sheet 6. Therefore, the operator can surely touch the target key position with the fingertip without hesitation, aiming at the convex portion on the key position. That is, the operability is improved, and the device (here, the copying machine) can be operated without mistake, and the downtime can be reduced.

Further, even for visually impaired persons, the key positions 5a of the touch panel 5 are made by the convex portions 7a to 7e of the transparent sheet 6.
5e can be recognized. A convex portion 7f for guiding the key position may be provided so that the visually impaired person can easily find the key positions 5a to 5e.

The height of the convex portion of the transparent sheet is preferably about 0.1 to 0.2 mm.

In the embodiment shown in FIG. 2 above, the convex portion 7 of the transparent sheet 6 constitutes characters and symbols, but other than that, it may comprise figures, or Braille for the visually impaired. May be configured.

The transparent sheet 6 may be of a seal type so that it can be attached / detached to / from the touch panel 5 so that it can be attached / detached or replaced according to the user's need or preference.

Further, the plurality of key position corresponding portions of the transparent sheet 6 on which the convex portions 7a to 7e are formed as described above may be colored and color-coded so that the transparency of the sheet 6 is not lost. As described above, by forming the convex portion on the key position corresponding portion and color-coding the key position corresponding portion, even if a large number of key positions are provided on the touch panel 5 in a dense state, The key position can be clearly indicated to prevent mis-touch.

[0023]

As described above, according to the touch panel type liquid crystal display of the present invention, since the transparent sheet having the convex portion corresponding to the key position of the touch panel on the surface is provided on the touch panel, the operability is improved. Better, you can definitely operate the device without mistouching. It also reduces downtime. Further, even visually impaired persons can operate the device by recognizing the key positions on the touch panel.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a touch panel type liquid crystal display according to the present invention.

FIG. 2 is a plan view of a liquid crystal display according to the present invention when configured as an operation panel of an image forming apparatus (copier).

FIG. 3 is a cross-sectional view showing a configuration of a conventional touch panel type liquid crystal display.

[Explanation of symbols]

 1 substrate 2 liquid crystal display board 3 switch board 5 touch panel 5a to 5e key position 6 transparent sheet 7, 7a to 7e convex portion

Claims (4)

[Claims] 1. A touch panel type liquid crystal display comprising a substrate, a liquid crystal display plate, a switch plate and a touch panel, which are sequentially laminated on the substrate, and a transparent sheet having a convex portion corresponding to a key position of the touch panel on the surface of the touch panel. A touch panel type liquid crystal display characterized by being provided. 2. The transparent sheet is detachably attached to the touch panel.
The touch panel type liquid crystal display described. 3. The touch panel type liquid crystal display according to claim 1, wherein the convex portion of the transparent sheet constitutes a character, a figure or Braille. 4. The touch panel type liquid crystal display according to claim 1, wherein the transparent sheet has a plurality of key position corresponding portions on which the convex portions are formed, which are colored and colored.