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Display with continuous profile peak luminance control

  • US 10,089,959 B2
  • Filed: 09/29/2015
  • Issued: 10/02/2018
  • Est. Priority Date: 04/24/2015
  • Status: Active Grant
First Claim
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1. Display circuitry, comprising:

  • an array of display pixels; and

    display control circuitry that displays images on the array of display pixels, wherein the display control circuitry includes;

    a gamma reference block having an input that receives digital data for the images, an output that supplies corresponding analog data signals for the images to columns of display pixels in the array, and a power supply terminal that receives a regulated voltage;

    a brightness control block that performs interpolation between selected first and second peak luminance control (PLC) profiles to obtain an interpolated lookup table listing interpolated voltage settings that control the regulated voltage for the gamma reference block; and

    a peak luminance control (PLC) profile lookup table that receives a display brightness setting and that identifies the selected first and second PLC profiles from among at least three PLC profiles based on the received display brightness setting, wherein the selected first PLC profile is a function of a given range of average pixel level values, and wherein the selected second PLC profile is also a function of the given range of average pixel level values, wherein the brightness control block comprises a peak luminance control (PLC) circuit that receives the selected first and second PLC profiles and an average pixel value and that outputs a peak luminance scaling factor, wherein brightness control block further comprises a first data converter controlled by the peak luminance scaling factor, wherein the brightness control block further comprises a second data converter coupled in series with the first data converter, and wherein the second data converted is controlled by the received display brightness setting.

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