Gas colume composing method of micro display

Abstract

The interval column constituting method is used for reflecting tricolor miniature display. On the surface of chip constituting the tricolor miniature display, one layer of transparent non-conducting material is plated and interval column positions are preset via the mask, so that the interval columns for the miniature displays will not superpose. The parts without interval column on the transparent non-conducting material are eliminated via photoetching, and interval columns comprising non-conducting material are formed in non-pixel areas. The said method ensures the identical height of interval columns in miniature display and no black spot and light spot produced during superposed projection in the miniature display.

Description

(1) Technical field [0001] The invention relates to a method for forming a gap column for a microdisplay, in particular to a method for forming a gap column between a metal reflective layer and an ITO layer for a reflective microdisplay. (2) Background technology [0002] Micro-displays (MICRO-DISPLAY) are widely used in electrical projection display equipment such as liquid crystal projectors, computer monitors, and projection TVs. The reflective function is turned on (0N) or closed (OFF) control, with three optical primary colors red (RED), green (GREEN), blue (BLUE) micro-display and projection light source, polarizing prism (PBS) and lens group composed of The optical engine makes the optical images of the three primary colors superimposed and projected on the screen to generate a color image. Therefore, the overlapping projection quality of the three-primary-color microdisplay will directly affect the picture quality and imaging effect of projection display. [0003] ...

AI Technical Summary

Problems solved by technology

[0004] said Image 6 The way in which the spacer particles A3 are used as the lattice gap is to maintain a uniform gap height H between the ITO glass sheet A4 and the reflective layer A5 on the surface of the chip A, but the existing spacer particles A3 are mixed with the plastic frame A1 When the resolution requirement of the microdisplay is not high and the pixel area (PIXEL AREA) area is not large, the uniformity of the gap height H can still be maintained at a barely acceptable level; and when the resolution increases and the pixel area In the state of enlarged area, it is difficult to maintain the uniformity of the overall gap height H

[0005] Another existing practice to maintain the gap height H, such as Figure 7 As shown, the spacer particles A3 are also sprinkled in the pixel area of ​​the micro-display, although the uniformity of the gap height H can be relatively improved, but the images are overlapped and displayed on the micro-display of the three primary colors of red, green and blue (R, G, B). When the position of each spacer A3 in the pixel area of ​​each R, G, and B three primary colors overlaps, the probability of overlapping the positions of the spacers A3 in the three primary colors increases. When the display performs combined light projection, the visual impression will be strengthened, so that the naked eye can easily detect the existence of black spots or light spots caused by the overlapping of the spacer particles A3 in the projected image, and serious light leakage will occur in the pixel area Defects affect the picture quality of projection imaging

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