Touch contact switch with a LCD display
First Claim
1. Touch contact switch having a LCD, which has two parallel, superimposed plates, between which are provided conductive layers having terminals for the display of individual segments of said LCD, wherein below a surface of said LCD is provided at least one sensor element of said touch contact switch, which is operable by contacting said surface of said LCD above said sensor element.
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Accused Products
Abstract
The invention provides an embodiment of a touch contact switch with a LC display or LCD (11, 26) having two parallel, superimposed glass plates (12, 13), between which are located conductive layers (15, 16; 27, 28) provided with terminals (29) for displaying individual segments (24, 25) of the LCD. According to the invention, below the surface (14) of the LCD is provided at least one sensor element (19; 21, 22) of the touch contact switch, which is operable by contacting the surface of the LCD above the sensor element. For this purpose on the one hand known sensor elements (19; 21, 22) of touch contact switches can be placed under the LCD and on the other portions of the conductive layers (27, 28) can be activated in interval operation both for displaying LCD symbols (24) and as sensor surfaces of capacitive touch contact switches.
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Citations
17 Claims
- 1. Touch contact switch having a LCD, which has two parallel, superimposed plates, between which are provided conductive layers having terminals for the display of individual segments of said LCD, wherein below a surface of said LCD is provided at least one sensor element of said touch contact switch, which is operable by contacting said surface of said LCD above said sensor element.
Specification