Digital and Analog Hybrid Scan Strategy for High Definition Microdisplay on Silicon

Man Liping; Ji Yuan; Chu Yongnan; Ran Feng; Huang Shuping

doi:10.3788/LOP55.012301

Journals >Laser & Optoelectronics Progress >Volume 55 >Issue 1 >Page 12301 > Article

Laser & Optoelectronics Progress
Vol. 55, Issue 1, 12301 (2018)

Digital and Analog Hybrid Scan Strategy for High Definition Microdisplay on Silicon

Man Liping, Ji Yuan^*, Chu Yongnan, Ran Feng, and Huang Shuping

Author Affiliations

Microelectronic Research and Development Center, Shanghai University, Shanghai 200072, China

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DOI: 10.3788/LOP55.012301 Cite this Article Set citation alerts

Man Liping, Ji Yuan, Chu Yongnan, Ran Feng, Huang Shuping. Digital and Analog Hybrid Scan Strategy for High Definition Microdisplay on Silicon[J]. Laser & Optoelectronics Progress, 2018, 55(1): 12301 Copy Citation Text

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Fig. 1. Digital and analog hybrid drive system structure

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Fig. 2. IC layout

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Fig. 3. DAC modulation characteristic curve of three subspace pixel units. (a) pix_r:8'b1111_1111; (b) pix_g:8'b1011_1111; (c) pix_b:8'b1111_0111

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Scan number	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
Subspace 0	X_A	X₃	—	—	—	—	—	—	—	X₁	—	X₀	X₂	—	—	—
Subspace 1	—	—	X₂	—	—	—	X₀	X_A	X₁	—	X₃	—	—	—	—	—
Subspace 2	—	—	—	X₁	—	X₃	—	—	—	—	—	—	—	X_A	X₀	X₂

Table 1. Example of 256 gray-level scanning sequence

Grayscale	64	128	256	512	1024	2048	4096
Number of subspace	1	2	3	5	8	13	26
Data transfer frequency withproposed method /MHz	40.83	43.75	52.49	59.49	69.26	80.31	80.53
Data transfer frequency withtraditional weight-bit /MHz	367.42	740.67	1487.16	2980.16	5966.14	11938.11	23882.04

Table 2. Data transfer frequency comparison between the proposed method and traditional scanning method at the resolution 1920 pixel×1080 pixel×3 and different grayscale levels

Scanalgorithm	Linearity /%	Scanningefficiency /%	Data transferfrequency /MHz
Traditionalweight-bit	100	3.14	1487.16
12 subfieldscan	100	66.41	69.99
19 subfieldscan	100	83.88	110.82
Optimization (Zfractal scan)	25	100	70.59
Proposedmethod	100	92.58	52.49

Table 3. Performance comparison of different scan algorithms under 256 gray level and 1920 pixel×1080 pixel×3 resolution

Man Liping, Ji Yuan, Chu Yongnan, Ran Feng, Huang Shuping. Digital and Analog Hybrid Scan Strategy for High Definition Microdisplay on Silicon[J]. Laser & Optoelectronics Progress, 2018, 55(1): 12301

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