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Driving method for LCoS display chip and display chip thereof

A technology of display chip and driving method, which is applied in the field of microelectronics technology and display, can solve problems such as excessive parasitic parameters and signal distortion, achieve low power consumption, reduce system frequency requirements, and ensure accuracy

Inactive Publication Date: 2013-10-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of signal distortion caused by excessive parasitic parameters of large-area arrays, and ensure that in some special cases (such as all pixel units in the same row need full swing charging), the storage capacitor in the pixel can still obtain the correct voltage signal

Method used

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  • Driving method for LCoS display chip and display chip thereof
  • Driving method for LCoS display chip and display chip thereof
  • Driving method for LCoS display chip and display chip thereof

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Embodiment Construction

[0025] The present invention has the LCoS display chip with high resolution (1280×1024), high gray level (256 levels), frame frequency 180Hz and frame refresh mode, and the digital control part includes a shift register module, a latch module, a comparison The input signal of the shift register module is the video data signal DATA and the shift register clock signal PIXCLK respectively, and the output of the shift register module and the external line synchronization signal HS are respectively the The input signal, the output of the latch module, the external DA synchronous signal RAMPDATA and the external pixel selection signal ROWSEL are the input signals of the comparator module respectively, and the inputs of the line scanning module are the external DA analog voltage signal RAMPV, the line synchronous signal HS, and the frame synchronous The signal VS and the array clearing signal SET, the output of the comparator module, the output of the line scanning module and the exte...

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Abstract

A driving method for an LCoS (Liquid Crystal On Silicon) display chip is characterized in that an external controller of the chip transmits data including image information to a shift register of the chip according to the requirement for resolution factor of the chip, the shift register temporarily stores the data in a latch, a comparator module compares the data with synchronous data signals of external DA output analog voltage, if the data is the same as the synchronous data signals through comparison, the corresponding DA analog voltage is stored in pixel units in a pixel array and read out from the pixel units in a frame refreshing manner during display, so as to refresh the LCoS screen and obtain stable images on the screen, and when the display of one frame finishes, residual charges on the liquid crystal display are emptied through control of a line scanning module.

Description

technical field [0001] The invention relates to a driving method of an LCoS display chip and the display chip thereof, belonging to the field of microelectronic technology and display technology. Background technique [0002] Liquid crystal on silicon microdisplay (LCoS) is the product of the combination of silicon semiconductor planar technology and flat panel display technology to a relatively mature stage. It has all the characteristics of VLSI technology. In terms of functions and applications, it is still an active flat panel display device. . Technically speaking, LCoS is a new type of system on chip (SoC), which is the product of multidisciplinary integration of microelectronics, flat panel display technology, modern integrated optics, and large-scale integrated circuit design. [0003] LCoS is the product of the combination of LCD and semiconductor CMOS technology. It has the characteristics of high resolution and high brightness. In addition, the product structure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
Inventor 徐申杨淼宋文星黄秋华孙伟锋陆生礼时龙兴
Owner SOUTHEAST UNIV
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