DISPLAY OPTIMIZATION TECHNIQUES FOR MICRO-LED DEVICES AND ARRAYS
Systems and methods to achieve desired color accuracy, power consumption, and gamma correction in an array of pixels of a micro-LED display. The method and system provides an array of pixels, wherein each pixel comprising a plurality of sub-pixels arranged in a matrix and a driving circuitry configured to provide an individual emission control signal to each sub-pixel of each pixel in the array of pixels to independently control a emission time and a duty cycle of each sub-pixel.
1 . A display device comprising:
an array of pixels, wherein each pixel comprising a plurality of sub-pixels arranged in a matrix; and
a driving circuitry configured to provide an individual emission control signal to each sub-pixel of each pixel in the array of pixels to independently control a emission time and a duty cycle of each sub-pixel.
2 . The display device as claimed in claim 1 , wherein a first emission control signal is provided concurrently to each sub-pixel of a first color in at least one row of pixels, a second emission control signal is provided concurrently to each sub-pixel of a second color in at least the one row of pixels, and a third emission control signal is provided concurrently to each sub-pixel of a third color in at least the row of pixels.
3 . The display device as claimed in claim 2 , wherein the first color is red, the second color is green, and the third color is blue.
4 . The display device as claimed in claim 2 , wherein a fourth emission control signal is provided to each sub-pixel of a fourth color in the array of pixels, wherein the fourth color is one of cyan, white, and yellow.
5 . The display device as claimed in claim 1 , wherein the emission control signal is a pulse-width-modulation (PWM) signal.
6 . The display device as claimed in claim 1 , wherein each pixel and sub-pixel is a micro-light emitting device (LED).
7 . The display device as claimed in claim 2 , wherein the first, second and third emission control signals are enabled at a same time or a different time during a frame time.
8 . The display device as claimed in claim 6 , wherein the first, second and third emission control signals are turned on and off multiple times at different duty cycle during the frame time.
9 . The display device as claimed in claim 1 , wherein the emission time or the duty cycle for each sub-pixel is dynamically adjusted to tune the display device color and optimize power consumption.
10 . The display device of claim 1 , wherein a frame data is evaluated to find the optimized duty cycle and the emission time.
11 . The display device of claim 1 , wherein an optimization algorithm is employed to calculate a global or a local optimized value for the duty cycle or the emission time for each sub-pixel.
12 . The display device as claimed in claim 9 , wherein the duty cycle is optimized for two range of grayscales to achieve the lowest power consumption.
13 . A method for controlling a pixel circuit of an array of pixel circuits of a display device, the pixel circuit comprising a plurality of subpixels, the method comprising:
providing an individual emission control signal to each sub-pixel of each pixel in the array of pixel circuits independently to control an emission time and a duty cycle of the sub-pixels.
14 . The method as claimed in claim 13 , wherein the emission time or the duty cycle for each sub-pixel is dynamically adjusted to tune the display device color and optimize power consumption.
15 . The method as claimed in claim 13 , wherein a frame data is evaluated to find the optimized duty cycle and the emission time.
16 . The method as claimed in claim 13 , wherein an optimization algorithm is employed to calculate a global or a local optimized value for the duty cycle or the emission time for each sub-pixel.
17 . The method as claimed in claim 13 , wherein the duty cycle is optimized for two range of grayscales to achieve the lowest power consumption.
18 . The method as claimed in claim 13 , wherein the emission control signal is a pulse-width-modulation (PWM) signal.
19 . The method as claimed in claim 13 , wherein each pixel and sub-pixel is a micro-light emitting device (LED).
20 . The method as claimed in claim 13 , further comprising:
providing a first emission control signal concurrently to each sub-pixel of a first color in at least one row of pixels;
providing a second emission control signal concurrently to each sub-pixel of a second color in at least the one row of pixels; and
providing a third emission control signal concurrently to each sub-pixel of a third color in at least the row of pixels.