DE10332954A1 - Self-luminous capacitive touch-sensitive control key e.g. for computer systems, has point- and/or surface-lighting unit applied on rear face of substrate-carrier plate for key-top touch area - Google Patents

Abstract

A self-luminous capacitive touch-sensitive control key, on a capacitive base, is designed as an input facility for computer systems, and on a rear-face of a substrate-carrier plate, preferably a glass-plate, is applied a point- and/or surface-lighting unit for the key-top touch area in the form of a self-luminous display and on the front face is arranged a capacitive contact-sensitive input facility as a key-top touch area.

Description

The The invention relates to a self-luminous, capacitive touch-sensitive Button for input option in computer systems and / or computer-like systems and / or electronic devices and / or controls of both a point and / or area lighting allows.

conventional Illuminated pushbuttons with tactile feedback have integrated snapshots in the housing and a pestle with transparent pressure cap for actuating the domes, being in the rectangular housing LED for illuminating the pressure cap are integrated, both area- as well as point illumination is possible. Since it is the snap discs mechanical spring elements is, is the life or the operating games of the buttons are limited. In addition, build very high. They are also due to the many mechanical components and make parts very expensive.

Further Illuminated pushbuttons are known which are used to illuminate proper lamps have integrated. Due to the lamp and socket size they build Push-buttons extremely high and are very difficult in devices etc. install. Furthermore the switching movement takes place via spring-loaded pestle, what in turn greatly influences the life of the probe.

Besides, they are Capacitive button known, which also have only point lighting. area lighting is at this solution not possible.

It is therefore an object of the invention is a self-luminous, capacitive touch-sensitive push button produce the type mentioned, the low installation depth having a surface and / or spot illumination and / or has defined symbol illumination and is self-luminous is, as well as having best viewing angle, as well as a high switching speed has and low driver voltage needed and unimpeachable for pollutants and resistant and is sealable.

These Task is inventively characterized solved, that on a glass substrate, which serves as a carrier substrate and with and / or without housing integration accomplished is, back a dot and / or Surface illumination type display element is applied with light-emitting diodes based on organic semiconductors and applied on the front side a capacitive touchscreen touch system being as organic layers for the dot and / or area illumination display element low molecular weight substances (OLEDs) and / or long-chain polymers (PLED) and the touchscreen touch probe as capacitive Multilayer system is formed, in which the glass substrate with a transparent metal film is coated by means of a is protected molten glass layer.

The inventive solution the advantage that on only one, with and / or without housing integration, transparent and / or translucent support substrate an extremely flat, self-luminous and capacitive touch-sensitive Button is created, which is very good as a button and / or switch for electronic equipment can be used. The button is characterized by a low height, high contrast, good viewing angle, low power consumption, size Brightness and fast image formation without streaks and shadows out. Furthermore He has a high degree of protection in terms of dust and water.

A preferred embodiment the self-luminous, capacitive touch-sensitive button has as a housing an aluminum housing from and as a carrier substrate for the in the case integrated tactile surface a glass plate on in the area of the spot and / or area illumination and the touch surface on the back an OLED display (Organic Light Emitting Diode) is applied, wherein the OLED display is constructed so that between two metallizations, a transparent anode of transparent conductive indium tin oxide (ITO) and a metal cathode, a thin, organic layer sequence is embedded from holes transporting material, emissive material, and electrons transporting material. Front side is on the carrier substrate applied a capacitive multi-layer touch screen system, wherein the glass pane front with a thin one conductive layer of indium tin oxide is coated by means of a is protected molten glass layer.

A Further development provides that only the carrier substrate with the touch surface and lighting without housing is used.

A Further development has a PLED display (Polymer Light Emitting Diode). Here comes instead of the layer sequences of low molecular weight Substances, a layer sequence of long-chain polymers used.

A advantageous development of the invention provides that as Glass substrate is used a safety glass pane, so that a robust and extremely resistant solution is created.

A Further advantageous embodiment of the invention is achieved by integrating achieved by multiple buttons on a carrier substrate plate.

There the OLED area is emissive (radiating), the viewing angle is 180 °.

Further advantageous developments of the invention are the subject of Dependent claims.

The Invention will now be described with reference to an embodiment with reference closer to the drawings explained. Show it:

1 : Section through a self-luminous, capacitive touch-sensitive push-button with housing

In 1 is section through a self-luminous, capacitive touch-sensitive button with housing shown. On a glass substrate 1 is backside between two metallizations, a transparent anode 2 made of transparent conductive indium tin oxide (ITO) and a metal cathode 3 , embedded a thin, organic layer sequence consisting of hole-transporting material 4, emitting material 5 , and electron-transporting material 6 consists. The front side also has a transparent conductive indium tin oxide on the glass substrate 2 (ITO) applied by means of a glass protective layer 7 is protected. At the four corner points of the conductive layer, a low AC voltage is applied, which is distributed evenly over the surface by means of special electrode patterns, which are attached to each corner point. The glass substrate is placed in a housing 8th integrated.

Claims (10)

Self-luminous, capacitive touch-sensitive sensor on a capacitive basis designed as an input option in computer systems and / or computer-like systems and / or electronic devices and / or controls, characterized in that on a substrate support plate, preferably glass plate, back a point and / or surface illumination unit for the touch surface is applied in the form of a self-luminous display, and front side, a capacitive touch-sensitive input option is arranged as a touch surface. Self-luminous, capacitive touch-sensitive button after Claim 1, characterized in that as a point and / or area illumination a Display element with light-emitting diodes based on organic semiconductors is used, where as organic layers low molecular weight Substances (OLED) and / or long-chain polymers (PLED) used become. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that the substrate carrier plate housed in a housing is. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that the housing made of metal and / or plastic is. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that as a touch-sensitive input option a capacitive multi-layer touch screen is used. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that the substrate carrier plate both the carrier plate for the input option and for the spot and / or surface illumination unit is. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that as a substrate carrier plate a safety glass pane is used. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that as a substrate carrier plate, a plastic plate is used. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that the spot and / or surface illumination on the substrate layer has two metallizations, a transparent Anode made of transparent conductive indium tin oxide (ITO) and a Metal cathode, wherein between these two metallizations one thin, embedded organic layer sequence, which transported from holes Material, emissive material, and electron transporting material Material exists. Self-luminous, capacitive touch-sensitive button after one of the preceding claims, characterized in that the capacitive touch screen input unit on the glass substrate also a transparent conductive indium tin oxide (ITO), which is protected by a molten glass layer.