Pixel circuit, method of driving pixel, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorHiroyuki Hara
Life of this patent
Estimating the term…
Abstract
A pixel circuit that makes an electro-optical element emit light includes a transistor inserted into a driving current path of the electro-optical element; a current value setting circuit that sets a current value of the driving current path; a level holding unit that stores the level of a supplied image signal; and a comparator circuit that compares the level of the stored image signal with the level of a supplied ramp level signal to control the operation of the transistor on the basis of the comparison result.
Claims9
A pixel circuit that makes an electro-optical element emit light, comprising:
- a transistor inserted into a driving current path of the electro-optical element;
- a current value setting circuit that sets a current value of the driving current path;
- a level holding unit that stores the level of a supplied image signal;
- and
- a comparator circuit that compares the level of the stored image signal with the level of a supplied ramp level signal to control the operation of the transistor on the basis of the comparison result.
A pixel circuit that makes an electro-optical element emit light, comprising:
- a transistor inserted into a driving current path of the electro-optical element;
- a current value setting circuit that sets a current value of the driving current path;
- and
- a comparator circuit that extracts one pixel signal from a composite signal including a pixel column signal portion having a series of pixel signals preceding on a time basis and a ramp level signal portion subsequent to the pixel column signal portion and compares the level of the extracted pixel signal with the level of the ramp level signal to control an operation time of the transistor on the basis of the comparison result.
A pixel driving method that makes a plurality of pixels two-dimensionally arranged on a substrate emit light, comprising:
- setting a current level supplied to each pixel in advance;
- storing a pixel signal to be displayed by each pixel in each pixel region;
- and
- comparing the level of a supplied ramp level signal with the level of the pixel signal of each pixel to control a light-emitting time of each pixel according to the current level.
A pixel driving method that makes a pixel emit light, comprising:
- setting a current level supplied to a pixel in advance;
- storing a pixel signal to be displayed by the pixel;
- and
- comparing a supplied ramp level signal with the pixel signal of the pixel to control a light-emitting time of the pixel according to the current level.
A pixel driving method that makes a plurality of electro-optical elements two-dimensionally arranged on a substrate emit light, comprising:
- setting a current level supplied to each electro-optical element in advance;
- selecting a pixel signal corresponding to an arrangement region of each electro-optical element from a composite signal including a pixel column signal portion having a series of pixel signals preceding on a time basis and a ramp level signal portion subsequent to the pixel column signal portion to store the level of the selected pixel signal;
- and
- comparing the level of each pixel signal corresponding to the arrangement region of each electro-optical element with the level of a supplied ramp level signal to control a light-emitting time of each electro-optical element according to the current level.
A pixel driving method that makes an electro-optical element emit light, comprising:
- setting a current level supplied to the electro-optical element in advance;
- extracting one pixel signal from a composite signal including a pixel column signal portion having a series of pixel signals preceding on a time basis and a ramp level signal portion subsequent to the pixel column signal portion to store the level of the extracted pixel signal;
- and
- comparing the level of the stored pixel signal with the level of the ramp level signal to control a light-emitting time of the electro-optical element according to the set current level.
Dependencies are inferred from the claim text.