Touch display device

• US 9,366,892 B2
• Filed: 01/22/2013
• Issued: 06/14/2016
• Est. Priority Date: 01/22/2013
• Status: Active Grant

• Current Assignee: Asia Vital Components Company Limited
• Original Assignee: Asia Vital Components Company Limited
• Inventors: Shen, Ching-Hang, Chang, Fu-Kuei
• Primary Examiner(s): Vu, Phu
• Application Number:
  US13/747,397
• Publication Number:
  US 20140204282A1
• Time in Patent Office: 1,239 Days
• Field of Search: 349149-152
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615

Abstract

A touch display device includes a case, a liquid crystal display unit and a frame body. The case has a receiving space. The liquid crystal display unit is disposed in the receiving space of the case. The liquid crystal display unit has a display surface. At least one printed circuit layer is disposed on the display surface. Multiple transmitters and multiple receivers are electrically connected on the printed circuit layer. The frame body is mounted on the case to cover the printed circuit layer. The printed circuit layer is directly formed on the display surface of the liquid crystal display unit so that the cost for the circuit boards is saved. In this case, the manufacturing cost of the touch display device is lowered. Moreover, the total thickness of the touch display device is reduced and the installation is facilitated.

Claims

1. A touch display device comprising:

a case having a receiving space;

a liquid crystal display unit disposed in the receiving space of the case, the liquid crystal display unit having a display surface with a single printed circuit layer directly coated on the display surface of the liquid crystal display unit, multiple transmitters and multiple receivers being electrically connected on the printed circuit layer; and

a frame body without a circuit board mounted on the case to cover the printed circuit layer, a total thickness of the touch display device being reduced.

2. The touch display device as claimed in claim 1, wherein the liquid crystal display unit has a first substrate, a second substrate and a liquid crystal layer sandwiched between the first and second substrates, a first polarizer being disposed on the other side of the first substrate, which side is distal from the liquid crystal layer, a second polarizer being disposed on the other side of the second substrate, which side is distal from the liquid crystal layer, the other side of the first polarizer, which side is distal from the first substrate serving as the display surface.

3. The touch display device as claimed in claim 2, wherein a protection glass layer is disposed on the other side of the first polarizer, which side is distal from the first substrate, the other side of the protection glass layer, which side is distal from the first polarizer serving as the display surface.

4. The touch display device as claimed in claim 1, wherein the printed circuit layer is directly coated on a periphery of the display surface of the liquid crystal display and the frame body is mounted on the case to cover the periphery of the display surface so as to cover the printed circuit layer.

5. The touch display device as claimed in claim 1, further comprising a connection line electrically connected with the printed circuit layer and the transmitters and the receivers, the connection line having a plug, the plug being selected from a group consisting of USB connector, 1394 connector, HDMI connector and Bluetooth connector.

6. The touch display device as claimed in claim 1, wherein the transmitters and the receivers are infrared transmitters and infrared receivers.