A thermal cycling device for thermally cycling samples of biological material contained in a microcard having a top and bottom surface. In the display device, a pixel emitting red light comprises a red color filter. In addition, fabrication methods for such heat spreaders and packages are provided. The location of the markings may vary from golfer to golfer and from club to club depending upon parameters. An as far as possible contiguous stabilization layer made of metal andor passivation material is applied on the appliedimpressed metalsemiconductorinsulator layer structure.