Drive circuit for carbon nanotube display and method for adjusting output luminance of display
A display driver and carbon nanotube technology, which is applied in cathode ray tube indicators, static indicators, instruments, etc., can solve problems such as unstable image display, reduce the size of the drive circuit, and improve brightness problems
Inactive Publication Date: 2012-07-04
PRINCETON TECH CORP
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Problems solved by technology
In conventional technology, the pixel 102 is applied with a constant current I const , then by figure 2 As shown, the voltage on the pixel 102 will also increase by the voltage V 1 gradually shifted to the voltage V 2 , which means that the brightness of the carbon nanotube display 100 will become brighter and brighter with the increase of the use time, resulting in unstable picture display
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[0024] In order to make the above and other objects, features and advantages of the present invention more comprehensible, a number of preferred embodiments will be described in detail below together with the accompanying drawings.
[0025] image 3 It is a schematic diagram of a carbon nanotube display 300 and its driving circuit 310 in an embodiment of the present invention. In this embodiment, the carbon nanotube display 300 includes a driving circuit 310 and a pixel 302 coupled to the driving circuit 310 . In addition, the driving circuit 310 further includes an output stage 304 and a calibration device 330 . Although here only one pixel 302 and the output stage 304 corresponding to the pixel and the adjustment device 330 are taken as an example, the present invention is not limited thereto, and those skilled in the art can extend the present invention to multiple pixels.
[0026] Figure 4 It is a schematic diagram of the transfer characteristic curve of the pixel 302 ...
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The invention provides a drive circuit for a carbon nanotube display and a method for adjusting the output luminance of the display, and particularly relates to the drive circuit for the carbon nanotube display, which is used for driving at least one pixel of the carbon nanotube display. The drive circuit for the carbon nanotube display comprises an output stage and an adjustment device, wherein the output stage is coupled to the pixel and is controlled by a pixel signal, so that the pixel is switched between a high voltage and a low voltage; and the adjustment device is coupled between the output stage and the pixel and is controlled by at least one bias voltage to adjust an equivalent resistance value of the adjustment device, so that the display luminance of the pixel is calibrated. The drive circuit for the carbon nanotube display can solve the problem of the luminance of the carbon nanotube display in the prior art and can reduce the size of the drive circuit.
Description
technical field [0001] The invention relates to a carbon nanotube display, in particular to a device and method for adjusting brightness of a carbon nanotube display. Background technique [0002] Carbon Nanotube Display (CNDP) is a very popular field emission display at present. It has the advantages of high brightness, wide viewing angle and liquid crystal display at the same time. It will become a very competitive display in the future. One of the most powerful display technologies. [0003] figure 1 It is a schematic diagram of the carbon nanotube display 100 and its driving circuit. The carbon nanotube display 100 includes a plurality of pixels 102 . The output stage 104 of the driving circuit 110 includes a p-type metal oxide semiconductor field effect transistor (p-type-MOSFET) 112 and an n-type metal oxide semiconductor field effect transistor (n-type-MOSFET) 114, and the two transistors 112 and 114 each include a gate coupled to the pixel signal S p and accept ...
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IPC IPC(8): G09G3/28G09G5/10
Inventor 周彦云
Owner PRINCETON TECH CORP