METAL MATERIAL AND ITS MANUFACTURING METHOD, THIN-FILM DEVICE AND ITS MANUFACTURING METHOD, ELEMENT-SIDE SUBSTRATE AND ITS MANUFACTURING METHOD, AND LIQUID CRYSTAL DISPLAY AND ITS MANUFACTURING METHOD

摘要

The difference between the work functions of different metal thin films without increasing the number of manufacturing steps and degrading the optical performance is decreased. A semitransmission reflection liquid crystal display (1) having a pixel electrode (64) composed of a reflection electrode (62) and a transmission electrode (63). The work function of the reflection electrode (62) is controlled in a range of at least 0.1 eV from the original value within ±0.2 eV of the work function of the transmission electrode (63) by plasma-processing the surface of the reflection electrode (62). With this, unlike conventional methods, without increasing the number of manufacturing steps and degrading the optical performance, even if a DC offset voltage most suitable for one of the reflection and transmission electrodes (62, 63) is applied, the degradation of the definition of the display image due to the difference from the DC offset voltage most suitable for the other electrode can be decreased, and the display definition of the liquid crystal display (1) can be improved.