JPH0422389Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a display device, particularly a small display body such as a keytop equipped with an optical display means (IPC:
G09F).

(Prior Art) A small display that includes a display formed on a supporting surface, and displays the operating status of a corresponding device by lighting or extinguishing lighting means provided behind the display. 2. Description of the Related Art Translucent display buttons are conventionally known.

By the way, in general, when a display is formed inside or at the back of a transparent body, it gives a sense of depth and gives a higher-class impression than when it is not. It had the disadvantage that it needed to be molded using a special method, and it was time-consuming to produce.

(Structure of the present invention) The present invention aims to provide a translucent display button with a sense of depth at a low cost, and is characterized in that the translucent display button is structured as follows. That is,
It consists of a transparent base made of synthetic resin, a light guide rod bonded to the transparent base, and a display layer formed between them, and the display layer is a light-opaque base formed on the back side of the transparent base. A transparent coating made of a plastic material containing a relatively bright pigment such as white, which is press-filled into the removed marks after the coating is removed into a desired shape using a YAG laser.

Hereinafter, the present invention will be described in detail according to embodiments shown in the drawings. In addition, in this specification, the term "opaque" is used to mean that the transmittance of light is relatively low compared to the transparent part, and is limited to the meaning that it does not necessarily allow light to pass through completely. It is not something that will be done.

(Example) In the illustrated example, 1 is a transparent substrate made of transparent synthetic resin, and the back side thereof has a concave hole 1a.
is formed. Reference numeral 4 denotes a light guide rod having a head 4a coupled to the recessed hole, and the light guide rod transmits light from an illumination means to be disposed behind the light guide rod to a light guide rod formed between the transparent base and the light guide rod, which will be described later. It has the function of guiding the transparent substrate to the display layer to be displayed and supporting the transparent substrate against an operation display surface (not shown) of an audio device or the like. The display layer is formed as follows. That is, first, a black coating film 5 is uniformly formed on the entire back surface of the transparent substrate before it is bonded to the light guide rod,
Thereafter, the black coating film is irradiated with a YAG laser beam from behind to partially remove the coating film into a desired shape. At that time, if the output of the laser beam and/or the thickness of the coating film are set appropriately, the surface portion of the synthetic resin base material on the back side of the transparent substrate underlying the coating film is removed thinly and uniformly, Laser processing marks 3 are formed. The laser processing marks are filled with a silicon adhesive when the transparent substrate and the light guiding rod are bonded together. In order to fill the laser processing mark with the adhesive, it is sufficient to inject or apply a predetermined amount of the adhesive into the corresponding part of the recessed hole, and then push the corresponding head into this, and the depth of the laser processing mark can be filled with the adhesive. It is possible to obtain a transparent film 2 made of adhesive with a film thickness depending on the size of the film. A white pigment is uniformly mixed and dispersed in the adhesive, and the adhesive exhibits a white color after curing.

The display by the translucent coating formed in this manner exhibits a white color due to the reflected light from the surface of the coating when the illumination means is turned off, while it appears white due to the transmitted light when the illumination means is turned on. It will be displayed using the color of the illumination means. Note that the present invention is not limited to the above-mentioned embodiments,
For example, in addition to being transparent, the transparent substrate 1 may be made of a light-transmitting material such as a colored material or a translucent material, and similarly, the light guiding rod 4 may also be a colored material or a colored material. Any conventionally known transparent material or configuration, such as one in which a film is formed at the tip, can be used.

(Effects based on configuration) As described above, the present invention removes the non-transparent coating of the transparent substrate into a desired shape using a YAG laser, and creates a plastic film between the transparent substrate and the separate light guide rod. By interposing a plastic material rich in plastic material and press-bonding them together, the processing marks formed during laser processing are filled with the plastic material, and the depth of the processing marks is adjusted according to the depth of the processing marks. Because it has a structure that allows easy formation of a thick translucent coating, it is possible to create inexpensive translucent display buttons with a sense of depth and vivid translucent display that does not cause color burn due to laser processing. can be provided to

[Brief explanation of the drawing]

What is shown is a side sectional view of an embodiment in which the present invention is applied to a key top. DESCRIPTION OF SYMBOLS 1... Transparent base, 1a... Recessed hole, 2... Transparent coating, 3... Laser processing marks, 4... Light guide rod, 4a
... Head, 5 ... Opaque coating film.

Claims (1)

[Claims for Utility Model Registration] A transparent display button comprising a transparent base 1 made of synthetic resin, a light guiding rod 4 coupled to the transparent base, and a display layer formed between them, the display: The layer contains an opaque coating 5 formed on the back surface of a transparent substrate, and a relatively bright pigment such as white, which is press-filled into the marks 3 obtained by removing the coating into a desired shape using a YAG laser. A transparent display button comprising a transparent coating 2 made of a plastic material.