Abstract: Ultrathin mutual capacitance touch screen and combined ultrathin touch screen composed by the said ultrathin mutual capacitance touch screen, the said ultrathin mutual capacitance touch screen comprises driving electrode clusters and sensing electrode clusters, wherein the driving electrode clusters are connected with an excitation signal source arranged outside the touch screen, and the sensing electrode clusters are connected with a sensing control module arranged outside the touch screen. The driving electrode clusters comprise tabulate driving electrodes which are made of transparent conductive materials and connected in series and/or in parallel, and the sensing electrode clusters comprise tabulate sensing electrodes which are made of transparent conductive materials and connected in series and/or in parallel.

Abstract: A mutual capacitance touch screen and a combined mutual capacitance touch screen formed by the combination of mutual capacitance touch screens. A driving layer and a sensor layer are included, wherein the driving layer comprises driving electrodes distributed at intervals in the same plane; the sensor layer comprises sense electrodes distributed at intervals in the same plane; and the places where the sense electrodes are distributed in the sensor layer are just over against the intervals between the driving electrodes in the driving layer so that the driving electrodes and the sense electrodes together fill the touch area of the touch screen.

Abstract: The present invention relates to methods for defining content at the point of purchase of a digital display device (“DDD”), such as a digital picture frame, and for managing content for the DDD. These methods may include the following steps of: defining content for a DDD by a first DDD content provider at a point of purchase; associating a frame content ID with the defined content; and programming the DDD of the DDD with the frame content ID prior to shipping of the DDD.

Abstract: The cover of a battery compartment is releaseably secured by a compressible U-shaped latch carried by the cover and provided with a pair of projections for engaging a side wail of the battery compartment. Both the side wall and latch are provided with corresponding recesses which define an opening for receiving a pointed object to compress the latch and release the projections.