Enhancement of the light output of GaN-based light-emitting diodes with surface-patterned ITO electrodes by maskless wet-etching

Enhancement of light output powers of GaN-based light emitting diodes with textured indium tin oxide transparent layer by using corrosive liquid

“…It indicates that the LEDs with a textured ITO layer nearly exhibited the same I-V characteristics as the conventional LEDs with a smooth ITO layer. The higher forward voltages brought on a little corroding damage to ITO film, which increases the sheet resistances [13] and affects current spreading. Among the four samples in Figure 5, the sample corroded for 90 s had, at an injection current of 20 mA, a forward voltage much higher than the conventional LEDs, and presented an inferior electrical property.…”

Real-Time Automatic Defect Inspection of PCTP ITO Circuits Using a 1-D Image Comparison Algorithm

“…Among all types of TPs, PCTP has become the dominant type due to its high resolution, good light transmission, multi-touch and low cost. In the PCTP manufacturing process, the most important procedure is to form patterned ITO circuits on both sides of a substrate using wet etching [2], plasma etching [3] or laser ablation [4]. However, all current etching methods will inevitably leave defects on PCTP ITO circuits, including pinholes, scratches, particles, short circuits and open circuits.…”

Effects of the optical absorption of a LED chip on the LED package

“…For the efficiency enhancement, LED chip technology has focused on increasing the quantum yield and light extraction efficiencies, whereas LED packaging technology have focused on optimizing the material and structure of LED package [8][9][10][11][12][13][14][15][16].…”