DE8310485U1 - Display field for two-function keys of a pocket device - Google Patents

Description

Display field for two-function keys of a pocket device

The invention relates to a display panel for two-function keys a pocket device according to the preamble of claim 1.

Two-function buttons are used on the one hand when the the space available for the display and in particular the function keys themselves is insufficient, on the other hand, to halve the number of function keys and to make the keypad and, if applicable, the display field clearer and to make it more visually appealing.

Up to now, slide switches were mainly used for this purpose, but they also took up a certain amount of space. If more space was available, both functional symbols were written next to one another so that both were always were visible. However, this could lead to confusion. Should a large number of buttons including the associated display field be accommodated in a relatively small space, so there were space limits for both procedures. In the case of sliding buttons, there was also a certain amount of effort for the individual sliding buttons. Such keys are moreover prone to wear and tear and prone to errors.

The invention is based on the object of designing a display panel according to the preamble of claim 1 so that any wear parts are avoided and the observer essentially always only one of the two, purely mechanically the generated function displays.

According to the invention, the object is achieved by the features of the label of claim 1 solved. Further refinements of the invention are protected in the subordinate claims.

The subject of the invention is a function switch for several two-function buttons provided. The display field consists of a labeling area for the function symbols, two function symbols assigned to a function key are written next to, above or below one another. A translucent optical layer which is treated or formed in a certain way is placed over it arranged that, from a certain point of view, only the one assigned to one of the two functions Can see lettering. If you turn the display field by a certain angle to the viewer, the second one Labels assigned to the function are visible.

The optical layer can be formed in different ways in order to achieve the stated purpose. A film or a layer is preferably applied to the inscription surface, which - preferably on the side facing the viewer - has a uniform pattern of parallel grooves. Preferably, these grooves are approximately sawtooth-shaped, with z. B. approximately a right angle is reached. The structural design has to be done in such a way that the desired directional effect is achieved on the basis of optical reflection laws including total reflection laws at the boundary layer to the air. Under certain circumstances it is also possible to design the inclination differently within the grooves or to provide some of the grooves with a mirror surface. The exact configuration, including the angle of inclination of the grooves and the spacing between the grooves, can be adapted to the specific application. The two function symbols assigned to a single function key can be written next to one another or one below the other. However, they can also be arranged one above the other in a certain way, for example above and below a transparent layer, corresponding to the mechanical one

Formation of the optical layer arranged above it. Especially in this case, the two function symbols also each consist of a large number of individual line-like components with different colors, wherein

only one color is visible at a certain viewing angle. Also the distances and possibly heights the individual grooves are 3 times the size of the function symbols used and are usually the same Same order of magnitude as the function symbols.

An embodiment of the invention is shown in the drawing shown.

It shows:

Figure 1 is a plan view of a display panel,

2a shows a schematic representation of the front view of the display field shown in FIG. 1 at the viewing angle 0 °,

FIG. 2b shows the same display field at a viewing angle of 45 °,

Figure 3 is a schematic representation of a section through a Display field with independent labeling area and an optical layer arranged above it.

It should be noted that optical layers that are suitable for the purpose in principle are commercially available and are used, for example, for different advertising purposes, for example in the form of so-called stereo postcards or in the form of regular patterns with a color change, depending on the viewing angle .

In the display panel, generally designated 1, passage openings 1 ', 2 ¹ , etc. to 10' are provided, through which the function keys 1, 2, etc. to 10 (not shown) pass. Under the key recesses I ¹ , 2 ' , the first function symbols are shown on the left and the function symbols for the second function are shown on the right. The function symbols for the second function are underlined for clearer identification. Instead, it is preferred in practice to use the second functional

keys to be displayed in an indirect way. X

• ■ "••• '• t' '' W:

In the lower part of the optical layer 23 is a schematically shown larger passage opening 21 'for the Function switch 21 (not shown) is shown. This The function switch could for example be a pressure switch, in which case a lamp lights up in one state, which for example passes through a translucent outer boundary of the function switch. It would also be conceivable that this Function switch lights up in the color of the assigned function symbols and functions. It would also be conceivable that two puncture switch provided for each of the two functions which expediently each have the same color as the assigned function symbols.

FIG. 2a shows the observer angle 0 to the display field, which makes the first function symbols visible. Here are the clarity for the sake of the individual functions 1 to 5 plotted. In fact, these symbols are in the illustration of Figure 2a but not visible because they are arranged in a plane perpendicular to the plane of the paper. Again, this is only schematic and by no means to scale, represented by the protrusions above the individual digits.

FIG. 2b shows the view shown in FIG. 2a at a viewing angle of approximately 45 °, again being purely schematic the second function to make it clearer assigned digits 11 to 15 are given.

FIG. 3 shows, in a greatly enlarged illustration, the section through a display field with an inscription surface 22 in the form an independent sheet and the optical layer arranged above it, the approximately sawtooth-shaped parallel and has the same grooves in the same order of magnitude as the function symbols 1, 11 and 2, etc. Is purely symbolic the eye of the beholder shown in a vertical plan view. In this case, the viewer actually only sees the Function symbols 1 and 2, but not function symbol 11, which is arranged next to the function symbol 1.

Claims (1)

• · • · ■ ■ ι ι EDUARD BAUMAhM Physicist German patent attorney European patent attorney PoienibüroEauaiaflaumann Posltacnl201 DBOIlHonenknchen Munich Sottlerstrasse 1 D-8O11 Hönenkirchen / Munich. Germany Wilhelm Ruf KG S ^e ! ° ⁿ ? Jl ° _o ^? Ä Tetetex 2627-810280 build pat Schwanthalerstraße 18 Telex 17 81O28Obaupat .E: ne- ^ use, jDef 15 see oaer. "ceeraer Munich 2 A cause kidney 15 sec Dr -—- ■ stco'ran ^: 'os: scheci <amr Munich <το -Nr Y ~ iobA & - & Ou ' PL-T 7.DO ICKJ 8C. ■ -Oiffeisenoani «Honenkircnen X το - \ r 32 COO, i: ~ ? Dl 594 C? ' ⁹ - ^{May 1983} Bm / abr. US. Zei (^, _f , "Your character, Ourref. ^{Rut Uii} ° Yourref, PROTECTION Λ Ν SPRA U CHE 1. Display field (1) for Zv; one-function keys (1-10) of a pocket device, in particular a remote control device or a pocket calculator, with a labeling field on which two per two-function button each one Function symbols (1, 11; 2, 12; ...), preferably with different colors, are attached, marked by a) Function switch (21) for several two-function buttons (1 - 10) in the Area of the display panel, b) attaching the two assigned to a two-function key Function symbols (1,11; 2,12; ...) on the labeling surface (22) of the display field (1) next to, above or below one another, c) the construction of a translucent, thus treated optical Layer (23) on the function symbols (1,11; 2,12;> ..), such that at Viewing the display field (1) from a first viewing angle (0 °) or several first viewing angles (0 °, 55 °) only the first function symbols (1-10) and when viewing the display field (1) from a second viewing angle (45 °) or several second viewing angles, only the second function symbols (11-20) are visible. ? .. Display panel according to claim 1, characterized in that the optical layer (23) made of glass or preferably consists of thermoplastic or thermosetting plastic and has parallel grooves (24), whose distance is in the same order of magnitude as the function symbols to be displayed. i. Display panel according to Claim 2, characterized in that the groove profile of the grooves (24) is essentially sawtooth-shaped. 4. Display panel according to one of claims 1-3, characterized in that the inscription surface (22) is applied to a film or a sheet of paper which is connected to the optical layer (23 /, preferably glued). 5. Display panel according to one of claims 1-3, characterized in that the back of the optical Layer (23) at the same time the writing surface (22) forms. 6. Display panel according to one of claims 1-3, characterized in that the surface of the pocket device forms the inscription surface, and that the optical layer (23) is applied, preferably glued, to this inscription surface. 7. Anüeigefeld according to any one of claims 1-3, characterized characterized in that at least part of the housing of the pocket device is transparent its inside the labeling area and on its outside has the optical layer and thus forms the display panel.
35 Display panel according to one or more of claims 1-7, characterized in that the display panel (1) with an inscription surface (22) and optical layer (23) recesses (Γ - 10 ') for the Function keys (1 - 10) and on the surface of the pocket genite attached, preferably glued on.