Information handling system narrow bezel touchscreen display touch detection grid

1. A portable information handling system comprising:

a housing having a rectangular shape with four sides;

a processor operable to process information;

a memory interfaced with the processor and operable to store the information;

a graphics processor interfaced with the processor and memory and operable to generate pixel values from the information that define a visual image;

a display interfaced with the graphics processor and integrated in the housing, the display operable to apply the pixel values to present the visual image;

a transparent cover disposed over the display;

a touch controller interfaced with the processor and operable to determine touches by capacitive effects associated with the touches at conductive traces interfaced with the touch controller; and

a touch detection grid having plural conductive traces integrated in the transparent cover, the touch detection grid conductive traces entering the transparent cover from parallel first and second of the four sides;

wherein the transparent cover folds along the first and second parallel sides so that a first and second conductive trace interface path are located at the rear side of the transparent cover at a side opposite the touch detection grid.

2. The portable information handling system of claim 1 further comprising:

a cable communicating between the touch controller and the touch detection grid;

the first conductive trace interface path extending along the first parallel side and integrated in the transparent cover to communicate with at least some of the touch detection conductive grid and the cable; and

the second conductive trace interface path extending along the second parallel side and integrated in the transparent cover to communicate with at least some of the touch detection conductive grid and the cable.

3. The portable information handling system of claim 1 wherein the housing comprises a single planar housing containing the processor, memory, graphics processor and touch controller under the display.

4. The portable information handling system of claim 1 wherein the housing comprises first and Second portions rotationally coupled to each other, the first portion integrating the display, the second portion integrating the processor, memory and graphics processor.

5. The portable information handling system of claim 1 wherein the touch detection grid plural conductive traces include first and second sets of conductive traces that overlap to define plural intersections, each intersection providing a capacitive touch detection point.

6. The system of claim 5 wherein the protective cover has a rectangle shape first and second diagonals, the first set of conductive traces running parallel to the first diagonal, the second set of conductive traces running parallel to the second diagonal.

7. The system of claim 6 wherein the touch controller scans the plural intersections parallel to parallel of the first and second sides.

8. The system of claim 6 wherein the touch controller scans the plural intersections parallel to the first diagonal.

9. A method for integrating touch detection a display, the method comprising:

integrating a touch detection grid into a protective surface having a rectangle shape, the touch detection grid having a first set of plural conductive traces running parallel to a first diagonal of the rectangle and a second set of plural conductive traces running parallel to a second diagonal of the rectangle, the first and second sets of plural traces having plural intersections;

routing the first and second sets of conductive traces from the protective surface only at opposing parallel sides of the protective surface rectangle;

interfacing the conductive traces with a touch controller through a cable only at the opposing parallel sides; and

detecting touches based upon capacitive characteristics at the intersections.

10. The method of claim 9 further comprising folding the parallel sides to dispose the routing of the first and second sets of conductive traces from the protective surface at a rear side of the protective surface.

11. The method of claim 10 further comprising:

coupling an OLED display film to the rear side of the protective surface; and

integrating the OLED display into a portable information handling system housing.

12. The method of claim 11 further comprising running control lines to OLED pixels in parallel with the first diagonal.

13. The method of claim 9 wherein the detecting touches further comprises scanning the plural intersections in a horizontal pattern.

14. The method of claim 9 wherein the detecting touches further comprises scanning the plural intersections in a diagonal pattern.

15. A display comprising:

plural pixels disposed to illuminate a visual image;

a protective coyer disposed over the display, the protective cover having a rectangular shape;

a touch detection grid integrated in the protective cover, the touch detection grid having a first set of conductive wires running parallel to a first diagonal of the rectangular shape and a second set of conductive wires running parallel to a second diagonal of the rectangular shape, the first and second set of conductive wires forming intersections; and

a touch controller interfaced with the first and second set of conductive wires and operable to scan capacitance at the intersections to detect touches at the protective surface;

wherein the conductive wires exit the protective surface to interface with the touch controller through only first and second parallel sides of the rectangular shape, the first set of conductive wires through the first parallel side, the second set of conductive wires through the second parallel side.

16. The display of claim 15 further comprising:

a first conductive trace interface path formed in a first side of the protective cover to interface with conductive wires of the touch detection grid;

a second conductive trace interface path formed in a second side of the protective to interface with conductive wires of the touch grid, the first and second sides on opposing parallel sides of the rectangular shape; and

one or more cables that interface the first and second conductive trace interface paths with the touch controller.

17. The display of claim 15 wherein control lines interfaced with the plural pixels run parallel to one or both of the first and second diagonals.