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Method for a cost effective touch screen

IP.com Disclosure Number: IPCOM000226257D
Publication Date: 2013-Mar-25
Document File: 3 page(s) / 49K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a system that converts an off-the-shelf Liquid Crystal Display (LCD) panel into a low-cost simplistic touch screen display.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 98% of the total text.

Page 01 of 3

Method for a cost effective touch screen

Space on the front of servers is premium real estate. Customers want an increased amount storage, which leads to the use of additional Hard Disk Drives (HDDs), which consume more space. Thermal engineers seek increased perf for airflow into the box. In addition, the design must include places for the power and reset buttons. The inclusion of all the desired components on the front of a server requires a more effective use the space to accommodate features such as Liquid Crystal Display (LCD) front panels.

A low-cost method is needed by which to drive inputs into a system without adding additional airflow-impeding buttons.

The novel solution is a system that converts an off-the-shelf LCD panel into a low-cost simplistic touch screen display.

To implement the system in a preferred embodiment:


When the LCD controller is ready to input data from the user, it turns off the LEDs next to the photo sensor and samples for a change in ambient light. Dividers are incorporated to reduce any "bleeding" from adjacent enabled LEDs.

This also has advantages over current technology in that it relies on changes in ambient light; therefore, items such as gloves are not problematic.

The following figures illustrate the components and design of the invented system. Figure 1 is the beginning off-the-shelf LCD. Figure 2 is the LCD with the invented design applied.

Figure 1: Off-the-shelf LCD

1


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Figure 2: Off the shelf LCD turned int...