TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The photoelectric conversion layer comprises many stacked photoelectric conversion material layers. The photoelectric conversion layer comprises a P-N junction layer or an electron-hole junction layer, a silicon layer, a multi-compounds layer or a nano and organic layer. The first electrode and the second electrode respectively comprise a transparent electrode, a comb-shaped conductive electrode or a reflector electrode. The first electrode and the second electrode are designed as or made of conductive materials being transparent to visible light, UV light or infrared light. The photoelectric conversion device comprises a compensation unit or an auxiliary unit to compensate the chromatic (color) shift or the chromatic aberration, where the compensation unit or the auxiliary unit used for correction of the color filter comprises, an organic LED, a backlight, colored glass, a liquid crystal cell (LC Cell) or (gamma curve). The photoelectric conversion layer comprises a photoelectric conversion layer having the ability to absorb at least a part of the wave band of UV light, infrared light, red light, green light, blue light, yellow light, green light or purplish red light. Each of the photoelectric conversion devices further comprises a transparent substrate and the base substrate is fitting, overlapping, mounting, in co-construction or side by side with the transparent substrate. The device further comprises an electrical energy storage device for storing the electrical energy generated by the photoelectric conversion device, where the device further comprises a switch, and the switch is switched to use the electrical energy of the electrical energy storage device when the remaining electrical energy of the electrical energy storage device is lower than a predetermined value. The base comprises a glass, a protective layer, a modeling layer, a touch sensor, a display, a source, a traffic sign, a banner, a reflection component or a device having patterns or/and words. The photoelectric conversion device is located at the front of, above and/or inside of the base. The display has at least a top substrate, a bottom substrate or a display unit, where the photoelectric conversion device is located at the front of, above, on both side of, and/or inside of the top substrate, the bottom substrate or the display unit. The display comprises: a display showing full wave band, a display showing partial wave bands, a display showing a monochrome, a reflecting display or a partially reflecting and partially transmitting display; a thin-film transistors-liquid crystal display, an active matrix organic LED, an electroluminescence display, an E-ink display, an electrode wetting display, a carbon-nano-tube display, a microelectromechanical systems display, a light interference display, a plasma display panel display or a cathode ray tube display. The display further comprises a light source comprising a monochromatic light, a white light having many spectral peaks, a white light LED, a red, blue and green light, LED, a white light with full spectrum wave band, an organic LED or an electroluminescence white light. The light source comprises a back light, a monochrome source, a white source and timing controlled colored light source. In the array devices, the photoelectric conversion devices are distributed in the bases, on the bases, staggered with the bases or/and arranged with the bases.