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长春光学精密机械与物... [3]
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A new driving method for LCoS with frame buffer pixels (EI CONFERENCE)
会议论文
OAI收割
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Song Y.
;
Ling Z.
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浏览/下载:26/0
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提交时间:2013/03/25
A new driving method for LCoS microdisplays with frame buffer pixels was developed here. The power dissipation of the LCoS microdisplays with frame buffer pixels is higher than that of the LCoS with DRAM-like pixels due to the twice samplings in LCoS with frame buffer pixels. In this paper
an adiabatic charging method was used to the second sampling of the frame buffer pixels in order to reduce the power dissipated in the transistors. The power dissipation of the second sampling was calculated when the power sources of the step
the ramp and the stair-step are used respectively. The conventional design adopted the step and contributed to high power and so result in more heat to deteriorate the device performance. The power dissipated in the transistors is almost zero if the ideal ramp source is used. The ramp can be the stair-step whose steps are infinity. The stair-step substitutes for the ramp due to easily generation and higher energy efficiency than the step. It can decrease the power dissipation of the LCoS panel and contributes to the heat reduction caused by power dissipation which can increase the microdisplay devices reliability. This method was developed based on the frame buffer pixel circuits which we proposed previously and can be applied to the others.
Low power frame buffer pixel circuits for LCoS microdisplays (EI CONFERENCE)
会议论文
OAI收割
13th International Display Workshops, IDW '06, December 6, 2006 - December 6, 2006, Otsu, Japan
Song Y.
;
Ling Z.
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|
浏览/下载:16/0
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提交时间:2013/03/25
In the frame buffer pixel circuits
extra power was dissipated to implement the data transfer operation. Extra power dissipation can not only increase power but also decrease the device reliability. One method to deal with it at pixel level is needed. In this novel pixel circuit
one PMOS transistor acts as a simple analog comparator
in order to determine whether the discharging by comparing the current pixel voltage and the next frame data voltage.
An LCoS microdisplay with new frame buffer pixel circuits (EI CONFERENCE)
会议论文
OAI收割
Second Americas Display Engineering and Applications Conference, ADEAC 2005, October 25, 2005 - October 27, 2005, Portland, OR, United states
Song Y.
;
Ling Z.
收藏
|
浏览/下载:16/0
|
提交时间:2013/03/25
In this paper we proposed novel frame buffer pixel circuits for LCoS microdisplays. The new pixel circuits were simulated and compared with others by SPICE. They can decrease the leakage current by minimizing the amount of transistors connecting with the pixel electrode in the voltage-holding period. And the PMOS charge-clear transistor is introduced firstly to simplify Interconnects of active matrix silicon backplane. The new pixel circuits have the advantages of high resistance to EMI
high voltage holding ratio under high Illumination and high temperature variance
less flick
and simple Interconnects.
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