Unlock instant, AI-driven research and patent intelligence for your innovation.

Hybrid driving method and integrated circuit for LCOS

A hybrid drive and drive technology, applied in instruments, static indicators, etc., can solve the problems of harsh manufacturing process requirements, difficult circuit implementation, high data rate, and achieve the effect of excellent display quality and improved display quality.

Inactive Publication Date: 2008-12-03
KINOPTICS TECHNOLOGIES INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, because there is no need to use a large capacitance capacitor to maintain the discharge voltage, the manufacturing process requirements are not as harsh as the analog drive circuit
However, there is also a problem with the PWM digital driving method: when it displays some images with low brightness (dark field) and the gray scale of adjacent pixels is close, some artificial defects (artifacts) like contour lines will appear.
At present, in order to solve this defect, most people have adopted the method of increasing the number of bits of the gray level, and this has brought about the problem of high data rate, which makes the circuit difficult to realize

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid driving method and integrated circuit for LCOS
  • Hybrid driving method and integrated circuit for LCOS
  • Hybrid driving method and integrated circuit for LCOS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] refer to Figure 4 , Figure 4 It shows a schematic diagram of driving a pixel in a hybrid driving manner according to the present invention. exist Figure 4 In step 401, a digital video signal is first input from an optical cable, cable, or cable TV line. In step 402, a scaling process is performed on the input digital video signal to make it a digital video signal matching the display device. For example, if the display device is a 1024×1024 display device with a megapixel level (available from Hitachi Corporation), when an input video signal is a signal corresponding to 768×768 pixels, it is enlarged, and When the input video signal corresponds to 1280×1280 pixels, it is compressed. After the scaling process, the obtained digital video signal is in one-to-one correspondence with the pixel of the display device. Here, it is assumed that the pixel (a i , b j ) The corresponding signal is B ij .

[0019] In a preferred embodiment, B ij is the digitized brightness...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for driving the silicon liquid crystal display via mixed driving powers, wherein it comprises: receiving the brightness signal relative to the pixel; comparing the brightness signal with the first threshold value; if it is not less than the first threshold value, entering into digit driving method; if it is lower than the first threshold value, entering into analogue driving method; the digit driving method fixes voltage and changes the impulse width to drive the silicon liquid crystal display element; the analogue driving method fixes the impulse width and changes the voltage to drive the display element.

Description

technical field [0001] The present invention relates generally to analog-to-digital hybrid driver integrated circuits. More specifically, the present invention relates to an analog-to-digital hybrid driving method and a corresponding circuit for use in LCOS (Liquid Crystal on Silicon). Background technique [0002] LCOS display technology is becoming an increasingly important one in the next generation display technology. As shown in FIG. 1 , a simplified diagram of a conventional LCOS display device is shown. The LCOS device 10 includes a silicon substrate 12 , bonding pads 14 disposed therearound, and a display cell array 16 at a central portion of the substrate 12 . Distributed at the bottom and around the array 16 are circuit areas 18 . The cover glass 20 is closely bonded to the display array 16 via a sealant 22 , with a liquid crystal layer interposed therebetween. Typically, silicon substrate 12 is less than 20 millimeters in size. LCOS device 10 operates in refl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 樊斌邵剑心
Owner KINOPTICS TECHNOLOGIES INC