Abstract: The present invention relates to a composition, a preparation method therefor, and a use thereof. The composition comprises a PEDF-derived short peptide (PDSP), a stabilizer, and a buffer agent. The pH of the composition ranges from 4 to 9. The stabilizer is a copolymer of vinyl pyrrolidone and vinyl acetate. The buffer agent is selected from a citric acid buffer system, a phosphoric acid buffer system, a boric acid buffer system, a histidine buffer system, or a combination thereof. The composition has improved stability, small irritation to eyes, and/or high bioavailability.

Abstract: The frame assembly mainly contains a number of linear edge members and a number of L-shaped corner members end-to-end joining the edge members by a number of connection pieces into a rectangular frame surrounding a touch panel. Both the edge and corner members have a C-shaped cross section with a space inside for holding circuit boards of the touch panel. The circuit boards of the corner and edge members are aligned so that their connectivity by matching connectors is easily established when putting the frame assembly together.

Abstract: The dimension detection system is implemented in cascaded circuit boards housed inside a frame assembly of the touch screen. After the frame assembly is assembled and powered, the dimension detection system in the circuit boards would provide horizontal and vertical feedback signals which are utilized to obtain the size of the touch screen. The size information of the touch screen could then be provided to the computer or embedded system where the touch screen is connected, preventing troublesome manual configuration. The dimension detection system and the flexible frame assembly together make the touch screen's production, storage, transportation, and usage more efficient and friendly.

Abstract: An optic touch control screen module includes a plurality of frame members of various sizes and joint members that are combined to form a frame. Each of the frame members and the joint members forms a receiving chamber. Every two opposite ones of the circuit boards are provided with oppositely arranged and corresponding optic transmitting elements and optic receiving elements. Each circuit board has opposite ends each forming a female connector. A plurality of male connectors is provided and each has a structure having two faces forming male terminals. To assemble, the male connector is set between and engages with the female connectors of two adjacent circuit boards. Thus, damage to the circuit boards can be avoided.

Abstract: The frame assembly mainly contains a number of linear edge members and a number of L-shaped corner members end-to-end joining the edge members by a number of connection pieces into a rectangular frame surrounding a touch panel. Both the edge and corner members have a C-shaped cross section with a space inside for holding circuit boards of the touch panel. The circuit boards of the corner and edge members are aligned so that their connectivity by matching connectors is easily established when putting the frame assembly together.

Abstract: The dimension detection system is implemented in cascaded circuit boards housed inside a frame assembly of the touch screen. After the frame assembly is assembled and powered, the dimension detection system in the circuit boards would provide horizontal and vertical feedback signals which are utilized to obtain the size of the touch screen. The size information of the touch screen could then be provided to the computer or embedded system where the touch screen is connected, preventing troublesome manual configuration. The dimension detection system and the flexible frame assembly together make the touch screen's production, storage, transportation, and usage more efficient and friendly.