TRANSLUCENT SINGLE LAYER TOUCH SCREEN DEVICES HAVING VERTICALLY ORIENTED PATTERN TRACES

• US 20090163256A1
• Filed: 12/21/2007
• Published: 06/25/2009
• Est. Priority Date: 12/21/2007
• Status: Abandoned Application

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: WIENKE, MATTHEW B.
• Application Number:
  US11/962,466
• Publication Number:
  US 20090163256A1
• Time in Patent Office: Days
• US Class Current: 455/575.300
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• 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
• CPC Class Codes: G06F 1/1683 for the transmission of signal or power between the different housings, e.g. details of wired or wireless communication, passage of cabling
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: H04M 1/0283 for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
• CPC Class Codes: H04M 2250/22 including a touch pad, a touch sensor or a touch detector digitizers for touch screens G06F3/041

Abstract

Disclosed is a translucent single layer touch screen device of a mesh composed of a low resistive material is configured so that the length of the pattern traces of the disclosed semi-transparent touch screen are arranged in the vertical direction, their circuitry terminating at one edge of the mesh. In a clam shell form factor mobile communication device, the circuitry coupled to the pattern traces of the mesh to receive touch signals is proximal the hinge edge, which is covered by artwork. There is no need for silver ink or other circuitry at the other edges of the mesh so that the above-described semi-transparent touch screen beneficially does not include any artwork on the other edges. Also disclosed are embodiments including rotator and slider form factors including the disclosed touch screen configuration. Accordingly, the disclosed unframed semi-transparent touch screen may provide advanced features and maintain an edge in design trends.

Claims

1. A mobile communication device having a clam shell form factor, comprising:

a first housing and a second housing coupled by a hinge, wherein the second housing is a flip, wherein the flip includes a hinge edge, a bottom edge, a first side edge and a second side edge;

a translucent touch screen device including a near-see-through mesh wherein pattern traces are formed in the mesh, the pattern traces being configured to receive input to generate touch signals, wherein the touch screen device is incorporated into the flip so that the pattern traces are parallel the first side edge and the second side edge; and

circuitry coupled to the mesh to receive touch signals, the circuitry coupled to a controller to control at least one function of the mobile communication device according to the touch signals,

wherein the circuitry is proximal the hinge edge.

2. The mobile communication device of claim 1, wherein the mesh is of a conductive material having a resistivity less than approximately 3.0 ohms per mm².

3. The mobile communication device of claim 2, wherein the conductive material is copper.

4. The mobile communication device of claim 2, wherein the circuitry comprises resistors to offset the low resistivity of the conductive material to meet a resistance requirement of the circuitry.

5. The mobile communication device of claim 1, wherein the first side edge and the second side edge are substantially transparent.

6. The mobile communication device of claim 1, wherein the bottom edge is substantially transparent.

7. The mobile communication device of claim 1, wherein the mesh is molded to a film, the device further comprising PCB laminated to the film proximal the hinge to connect the pattern traces to circuitry components of the circuitry.

8. The mobile communication device of claim 1, wherein:

the first housing includes a display screen configured to display indicia; and

the display screen of the first housing is configured to display indicia thereon so that the indicia are visible through the touch screen device of the flip so that input received by the touch screen device is responsive to indicia displayed on the display screen of the first housing.

9. The mobile communication device of claim 1, wherein:

the mesh has a bias; and

the mesh is positioned with a bias direction of the mesh parallel to the hinge.

10. The mobile communication device of claim 1, wherein the touch screen is capacitive.

11. A mobile communication device having a clam shell form factor, comprising:

a first housing and a second housing coupled by a hinge, wherein the second housing is a flip, wherein the flip includes a hinge edge;

a translucent touch screen device including a near-see-through mesh wherein pattern traces are formed in the mesh, the pattern traces being configured to receive input to generate touch signals, wherein the touch screen device is incorporated into the flip so that the pattern traces are perpendicular the hinge edge; and

circuitry coupled to the mesh to receive touch signals, the circuitry coupled to a controller to control at least one function of the mobile communication device according to the touch signals,

wherein the circuitry is proximal the hinge edge.

12. The mobile communication device of claim 11, wherein the mesh is molded to a film, the device further comprising PCB laminated to the film proximal the hinge to connect the pattern traces to circuitry components of the circuitry.

13. The mobile communication device of claim 11, wherein the hinge is proximal to artwork, the artwork at least in part obscuring the circuitry.

14. The mobile communication device of claim 11, wherein the mesh is of a conductive material having a resistivity less than approximately 3.0 ohms per mm².

15. The mobile communication device of claim 11, wherein the mesh is copper.

16. A mobile communication device having at least one of a rotator form factor and a slider form factor, comprising:

a first housing and a second housing moveably coupled, wherein the second housing is a moveable housing with respect to the first housing, wherein the moveable housing includes a top edge, a bottom edge, a first side edge and a second side edge;

a translucent touch screen device including a mesh and a film molded to the mesh wherein pattern traces are formed in the mesh, the pattern traces being configured to receive input to generate touch signals, wherein the touch screen device is incorporated into the moveable housing so that the pattern traces are parallel the first side edge and the second side edge; and

circuitry coupled to the mesh to receive touch signals, the circuitry coupled to a controller to control at least one function of the mobile communication device according to the touch signals,

wherein the circuitry is proximal at least one of the top edge and the bottom edge of the moveable housing.

17. The mobile communication device of claim 16, wherein the mesh is of a conductive material having a resistivity less than approximately 3.0 ohms per mm².

18. The mobile communication device of claim 16, wherein the first side edge and the second side edge of the moveable housing are substantially transparent.

19. The mobile communication device of claim 16, wherein the bottom edge of the moveable housing is substantially transparent.

20. The mobile communication device of claim 16, further comprising flexible PCB laminated to the film proximal the top edge of the moveable housing to connect the pattern traces to circuitry components of the circuitry.