JP2000148398A - Panel device for display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make mountable a light emitting element, a light receiving element and a panel switch to constitute a touch switch part on one printed circuit board even when the sliding direction of the panel switch is not perpendicular to a display surface of a display. SOLUTION: The panel device is constituted by providing a light guiding member 10 on the light emitting side to reflect light emitted from the light emitting element 1 on the display surface 100a of the display 100 and a light guiding member 11 on the light receiving side to reflect light passed on the display surface 100a and to make it to be incident on the light receiving element 2 and mounting the light emitting element 1, the light receiving element 2 and the panel switch 9 on one printed circuit board 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel device for a display device having a touch switch and a panel switch.

[0002]

2. Description of the Related Art Conventionally, in this type of panel device,
A panel switch is provided on a panel used for an outer frame of an image display device such as a liquid crystal display device (hereinafter simply referred to as a display device), and a touch switch operation on a display surface (screen) of the display device is detected in the panel. Some touch switches are provided.

FIG. 2 shows a configuration of a touch switch section in a panel device. A plurality of light emitting elements (eg, LEDs) 1
And a plurality of light receiving elements (for example, phototransistors) 2
Is held by the resin holder 4 and the printed circuit board 3
An acrylic plate 5 as a transparent plate and an infrared transmission filter 6 are mounted on the printed circuit board 3. The infrared transmitting filter 6 includes first and second filter portions 6a and 6b facing each other and third and second filter portions 6a and 6b facing each other.
It has a quadrangular shape having fourth filter portions 6c and 6d on each side. Each light emitting element 1 is provided in the holder 4.
There is formed a slit 4a for regulating the optical path of the light emitted from the light source and the light incident on each light receiving element 2 to give directivity.

The first, third, and third light emitting elements 1
The infrared rays (beams) emitted through the filter sections 6a and 6c are radiated in a grid pattern on the surface of the acrylic plate 5, that is, on the display surface of the display device 7, and
The light enters the light receiving element 2 via the filter sections 6b and 6d. The emission and reception of light by the plurality of light emitting elements 1 and the plurality of light receiving elements 2 are sequentially performed in a scanning manner. Here, if the scanning light emitted from the plurality of light emitting elements 1 via the first and third filter sections 6a and 6c is blocked by a finger or the like, the corresponding light receiving element 2 does not receive the scanning light. It is detected that an operation has been performed.

The printed circuit board 3 has a frame shape with an opening at the center so that a display device can be mounted from the back side. The printed circuit board 3 has a panel switch and a switch (not shown). Various circuit elements necessary for detection are mounted.

[0006]

In the above-mentioned conventional panel device, when the sliding direction of the panel switch is not perpendicular to the display surface of the display device, a printed circuit board for the touch switch and the panel switch are mounted. It is necessary to provide a printed circuit board separately. FIG. 3 shows a cross-sectional configuration of the panel device in this case. In FIG. 3,
The display device 100 is shown attached to a panel device.

The light emitting element 1, light receiving element 2, holder 4, acrylic plate 5, and infrared transmission filter 6 shown in FIG. 2 are housed in a resin panel 8. In addition, a panel switch 9 is provided on an outer peripheral portion of the display surface 100a of the display device 100, that is, a portion to be a frame portion of the panel 8 in the panel 8. Here, as shown in the figure, when the sliding direction of the panel switch 9 (indicated by the arrow in the figure) is not perpendicular to the display surface 100a of the display device 100, the touch switch mounting the light emitting element 1, the light receiving element 2, and the like. Since the printed circuit board 31 is installed in parallel with the display surface 100a of the display device 100, the panel switch 9 cannot be mounted on the printed circuit board 31. Therefore, the panel switch 9 is mounted on another printed circuit board 32.

However, with this configuration, 2
There is a problem that parts such as wires for making electrical connection between the printed boards 31 and 32 are required while preparing the printed boards 31 and 32. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and enables a light emitting element, a light receiving element, and a panel switch to be mounted on a single printed circuit board even when a sliding direction of a panel switch is not perpendicular to a display surface of a display device. The purpose is to do.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a light emitting device (1) is provided.
The light emitted from the display device (100) is
0a) a light-emitting side reflector (10) that reflects upwards;
A light-receiving-side reflector (11) for reflecting light passing through the display surface (100a) and entering the light-receiving element (2); and a light-emitting element (1), a light-receiving element (2), and a panel switch ( 9) is mounted on one printed circuit board (33).

By providing the light-emitting side reflector (10) and the light-receiving side reflector (11), the sliding direction of the panel switch (9) is not perpendicular to the display surface (100a) of the display device (100). Even if the display surface (1
Since the scanning light can be set according to 00a), a configuration in which the light emitting element (1), the light receiving element (2), and the panel switch (9) are mounted on one printed circuit board (33) can be adopted.

In this case, as in the second aspect of the present invention, the light-emitting side reflector (10) guides the light emitted from the light-emitting element (1) and transmits the guided light to the display surface ( 100
a) using a light-emitting side light guide member (10) having a light-emitting side reflection surface (10a) that reflects upward,
As 1), there is a light-receiving-side reflecting surface (11a) for reflecting light passing over the display surface (100a), and the light reflected on the light-receiving-side reflecting surface (11a) is transmitted to the light receiving element (2). A light receiving side light guide member (11) for guiding light can be used.

According to the third aspect of the present invention, the light emitting side light guide member (10) and the light receiving side light guide member (11) are held by the holder (41) and mounted on the printed circuit board (33). By doing so, the panel switch (9), the light emitting element (1), the light receiving element (2), the light emitting side light guide member (10) and the light receiving side light guide member (11) are connected to one printed circuit board (3).
3) Can be mounted.

Note that the reference numerals in parentheses above indicate the correspondence with specific configurations described in the embodiments described later.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows a cross-sectional configuration of a panel device showing one embodiment of the present invention. In FIG. 1, components denoted by the same reference numerals as those shown in FIGS. 2 and 3 indicate the same or equivalent components.

In this embodiment, as shown in FIG. 1, a light emitting element 1, a light receiving element 2, and a panel switch 9 are provided.
Are mounted on one printed circuit board 33. Also,
A resin holder 41 having a shape surrounding the outer periphery of the display device 100 is mounted on the printed board 33, and the acrylic plate 5 is held by the holder 41 on the front surface of the display surface 100 a of the display device 100. It has become.

Light guide members 10 and 11 made of acrylic are provided inside the holder 41. Light guide member 1
Reference numeral 0 denotes a light-emitting-side reflecting portion having a reflecting surface (light-emitting-side reflecting surface) 10a that guides light emitted from the light-emitting element 1 and reflects the guided light toward the surface of the acrylic plate 5 toward the surface. are doing. In addition, the light guide member 11 has a reflection surface (light receiving side reflection surface) 11 that reflects light passing over the surface of the acrylic plate 5.
a, and constitutes a light receiving side reflector that guides the light reflected by the reflection surface 11 a to the light receiving element 2. Light guide member 1
Reference numerals 0 and 11 may be an integrated member that conforms to the shape in the holder 41, or may be formed separately for each of the four sides on which the light emitting element 1 and the light receiving element 2 are arranged.

In the above configuration, the light emitted from the light emitting element 1 is guided by the light guide member 10 and is reflected by the reflection surface 1.
It is reflected at 0a. Then, the light is emitted onto the acrylic plate 5 through the infrared transmission filter 6 in a direction parallel to the surface thereof. The emitted scanning light further reaches the light guide member 11 via the infrared transmission filter 6, and the reflection surface 11a
And is incident on the light receiving element 2.

By providing the light guide member 10 having the reflection surface 10a and the light guide member 11 having the reflection surface 11a, the sliding direction of the panel switch 9 and the display device 1
Since the scanning light can be set in accordance with the display surface 100a even when the display surface 100a of No. 00 is not vertical, the light emitting element 1, the light receiving element 2, the panel switch 9, etc. It can be configured to be mounted.

Further, by providing the light guide members 10 and 11, the distance between the light emitting element 1 and the infrared transmitting filter 6 and the distance between the infrared transmitting filter 6 and the light receiving element 2 can be increased. In addition, erroneous detection due to the incidence of external light such as sunlight can be reduced. FIG.
In the conventional configuration shown in FIG.
1, the printed circuit board 31 is placed on the printed circuit board 31 by static electricity from the acrylic plate 5 to the printed circuit board 31.
However, in this embodiment, since the printed circuit board 33 and the acrylic plate 5 are separated from each other, the acrylic plate 5
From the static electricity to the printed circuit board 33 can be eliminated.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a cross-sectional configuration of a panel device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an assembly configuration of a touch switch unit in a conventional panel device.

FIG. 3 is a diagram showing a cross-sectional configuration of a conventional panel device.

[Description of Signs] 1 ... Light-emitting element, 2 ... Light-receiving element, 5 ... Acrylic plate, 8 ... Panel, 9 ... Panel switch, 10, 11 ... Light guide member, 3
3 ... printed circuit board, 41 ... holder, 100 ... display device.

Claims (3)

[Claims] A display surface (100) of a display device (100).
a) a light emitting element (1) for emitting light for detecting a touch switch operation on the light emitting element, a light receiving element (2) for receiving light emitted from the light emitting element (1), and the display surface (1).
00a), comprising a panel switch (9) disposed on an outer peripheral portion of the panel device for a display device, wherein light emitted from the light emitting element (1) is transmitted to the display surface (1).
00a) The light-emitting-side reflector (10) that reflects upwards
And a light-receiving-side reflector (1) that reflects light that has passed over the display surface (100a) and makes the light incident on the light-receiving element (2).
1) wherein the light emitting element (1), the light receiving element (2), and the panel switch (9) are mounted on one printed circuit board (33). Panel equipment. 2. The light-emitting side reflector (10) guides light emitted from the light-emitting element (1), and reflects the guided light toward the display surface (100a). A light-emitting side light guide member (10) having a side reflection surface (10a), wherein the light-receiving side reflection portion (11) is provided on the display surface (100a).
A light-receiving-side reflecting surface (11a) for reflecting light passing through the light-receiving side, and a light-receiving-side light-guiding member ( The panel device for a display device according to claim 1, wherein the panel device is (11). 3. The light-emitting side light guide member (10) and the light-receiving side light guide member (11) are mounted on the printed circuit board (33) while being held by a holder (41). A panel device for the display device according to claim 2.