Methods and systems of pixel illumination
AssigneeMicroDisplay Corporation
InventorMichael Bolotski
Life of this patent
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Abstract
A method of illuminating a pixel on a display to a desired brightness level that includes dividing a time required to reach a maximum brightness level into one or more time slices, varying a pixel voltage associated with the pixel according to a sequence of voltage values over the one or more time slices, and gradually increasing the brightness of the pixel according to the pixel voltage.
Claims19
A method of increasing the brightness of a pixel on a display to a desired brightness level, comprising:
- (a) dividing a time required to reach a maximum brightness level into one or more time slices;
- and
- (b) varying a pixel voltage associated with the pixel according to a sequence of voltage values over the one or more time slices;
- wherein the brightness of the pixel is gradually increased, and wherein the desired brightness level is reached at an end of the sequence of voltage values.
A method of illuminating a pixel on a display to a desired brightness level, comprising:
- (a) loading a control field associated with the pixel with a first bit of a bit sequence for a corresponding time slice of a control field time;
- (b) maintaining, when a value of the first bit is zero, a previous value of a pixel voltage associated with the pixel for a duration of the corresponding time slice;
- (c) updating, when the value of the first bit is one, a value of the pixel voltage according to an input voltage and maintaining the updated value of the pixel voltage for the duration of the time slice;
- and
- (d) repeating steps (a)-(c) for subsequent bits of the bit sequence and corresponding time slices of the control field time,
- wherein an integral over time of the pixel voltage corresponds to the desired brightness level of the pixel.
A pixel structure, comprising:
- a capacitor having a first port and a second port;
- a control bit element configured to receive a data signal and a select signal and to output a control signal;
- and
- a logic circuit configured to receive the control signal and an enable signal and to output a signal to control a switch that is configured to couple an input voltage to the first port of the capacitor.
A method for illuminating a display, comprising:
- (a) illuminating a first pixel of the display according to a first time series of brightness levels;
- and
- (b) illuminating a second pixel of the display according to a second time series of brightness levels;
- thereby gradually illuminating the display to provide a substantially uniform illumination.
Dependencies are inferred from the claim text.