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Devices and methods for controlling both LED and touch sense elements via a single IC package pin

一种触摸传感、元件的技术，应用在基于IC的控制器电路领域

Active Publication Date: 2012-01-18
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A significant limitation on the effectiveness of IC devices is that, in order to meet size requirements, many ICs provide a limited number of I / O pins external to the device

Method used

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  • Devices and methods for controlling both LED and touch sense elements via a single IC package pin
  • Devices and methods for controlling both LED and touch sense elements via a single IC package pin
  • Devices and methods for controlling both LED and touch sense elements via a single IC package pin

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 1 One example of a touchscreen light emitting diode (LED) display device 100 is generally shown. The device 100 is adapted to provide one or more visual images to a user via the display 101 . The device 100 may also be adapted to allow a user to communicate commands to the device 100 through finger or stylus based actuation of the display 101 . In the example shown, the display device 100 is provided as a stand-alone unit and is constructed in a handheld size. Those skilled in the art will appreciate that any size or configuration of device 100 may also be used, including a display device in combination with other devices (eg, kitchen electronics, car dashboard, etc.). Although an LED type display device is generally described herein, it is exemplary of one embodiment, not limiting, as other embodiments may utilize or include LCD, plasma, and other display types and formats.

[0027] figure 2 A block diagram of one example of the LED display device 100 is ge...

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PUM

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Abstract

Devices and methods for minimizing a number of I / O pins needed to control LED and touch sense operations are described and disclosed herein. In an embodiment, a method comprises controlling at least one light emitting diode (LED) element via a single pin, and controlling at least one touch sense element via the single pin. In an embodiment, a touch-sensitive light emitting diode (LED) display device comprises at least one LED element, at least one touch sense element, and a controller integrated in an integrated circuit (IC) and coupled to the at least one LED element and the at least one touch sense element via a single pin. The controller is configured to communicate via the pin with the at least one LED element and the at least one touch sense element.

Description

technical field [0001] The present invention relates generally to touch-sensitive display devices and, more particularly, to IC-based controller circuits suitable for operating touch-sensing and display circuits of display devices, such as LED display devices. Background technique [0002] Touch-sensitive displays are already commonplace in today's electronic devices. For example, many of today's cell phones, mp3 players, laptop computers, office equipment, ATM machines, credit card readers, and even kitchen electronics include touch-sensitive displays that convey visual The touch commands passed by the interaction to activate the device function. [0003] A typical touch sensitive display device comprises a matrix of LED (Light Emitting Diode) elements. These elements can be selectively activated by controller circuitry to render images on the display. Other touch-sensitive display devices include liquid crystal displays (LCDs), plasmas, and the like. [0004] Known tou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G06F3/041
CPCH03K17/96H03K2217/96046G06F3/041G09G3/3208G09G2300/0426G06F3/04164G06F3/04166
Inventor A·拉本斯泰恩S-M·王
Owner INFINEON TECH AG