Infrared touch screen device

• US 9,927,921 B2
• Filed: 06/20/2016
• Issued: 03/27/2018
• Est. Priority Date: 04/25/2016
• Status: Active Grant

• Current Assignee: Jun Goo Lee
• Original Assignee: Jun Goo Lee
• Inventors: Lee, Jun Goo
• Primary Examiner(s): SHENG, TOM V
• Application Number:
  US15/186,972
• Publication Number:
  US 20170308236A1
• Time in Patent Office: 645 Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04182 Filtering of noise external to the device and not generated by digitiser components
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen

Abstract

Provided is an infrared touch screen device including the transmission unit which contains the rectangular bezel which is constituted so that the touch screen panel is to be installed, and the multiple numbers of light transmitting elements which are installed in the lengthwise direction of corresponding bezel to one horizontal bezel and one vertical bezel respectively among the bezels and transmitting the infrared rays forward, and the reception unit which is further configured to have the multiple numbers of light receiving elements which are installed at two bezels among the bezels so that the infrared rays transmitted from the transmission unit is to be received and contain the band pass filter which makes only the infrared rays of specific wavelength band among the infrared rays transmitted from the transmission unit to be received by the multiple numbers of light receiving elements.

Claims

1. A rectangular bezel constituted so that an infrared touch screen panel is to be installed,

the infrared touch screen device comprising:

a transmission unit in which the corresponded frame is installed in the lengthwise direction to one horizontal bezel and one vertical bezel among the bezels and comprises a multiple numbers of light transmitting elements from which infrared rays are transmitted forward;

a reception unit configured to;

comprise a multiple numbers of light receiving elements installed at two bezels among the bezels in order to receive the infrared rays transmitted from the transmission unit a band pass filter which makes only the infrared rays of specific wavelength band among the infrared rays transmitted from the transmission unit to be received by the multiple numbers of light receiving elements,

wherein the transmission unit is further configured to contain additionally a band pass filter which transmits only the infrared rays of specific band among the infrared rays transmitted from the multiple numbers of light transmitting elements,

wherein the band pass filters of the transmission unit and reception unit is further configured to have uniform filter characteristic for the entire filter through the vacuum metalizing, and to be manufactured with the length as long as that of the installed bezel.

2. The infrared touch screen device of claim 1, wherein each of the multiple numbers of light transmitting elements is further configured to transmit the infrared signal of 900˜

1,000 nm band, and the band pass filter is further configured to filter the infrared signal of 900˜

1,000 nm band, and each of the multiple numbers of light receiving elements is further configured to receive the infrared signal of 850˜

1,100 nm band.

3. The infrared touch screen device of claim 1, wherein the reception unit and transmission unit are further configured to contain additionally the high pass filter installed at the front of band pass filter, and the band pass filter is further configured to be inserted and fixed into the installation groove with “

”

shape which is formed in the lengthwise direction to the corresponding bezel, and the band pass filter and high pass filter are further configured to be installed vertically against the light axis of the infrared rays.

4. The infrared touch screen device of claim 3, wherein the reception unit and transmission unit are further configured to contain additionally the high pass filter installed at the front of band pass filter, and the band pass filter is further configured to be inserted and fixed into the installation groove with “

”

shape which is formed in the lengthwise direction to the corresponding bezel, and the band pass filter and high pass filter are further configured to be installed with the inclination of 5°

˜

10°

in relation to the axis which is perpendicular to the light axis of infrared rays.

5. The infrared touch screen device of claim 4, wherein the high pass filter is further configured to make at least its surface adjacent to the band pass filter having convex shape.

6. The infrared touch screen device of claim 3, wherein the high pass filter is further configured to make at least its surface adjacent to the band pass filter having convex shape.