• Patent Title: SYSTEMS AND METHODS FOR LOW POWER COMMON ELECTRODE VOLTAGE GENERATION FOR DISPLAYS
  • Application No.: US18784312
    Application Date: 2024-07-25
  • Publication No.: US20240379074A1
    Publication Date: 2024-11-14
  • Inventor: Stewart S. Taylor
  • Applicant: Snap Inc.
  • Applicant Address: US CA Santa Monica
  • Assignee: Snap Inc.
  • Current Assignee: Snap Inc.
  • Current Assignee Address: US CA Santa Monica
  • Main IPC: G09G3/36
  • IPC: G09G3/36
SYSTEMS AND METHODS FOR LOW POWER COMMON ELECTRODE VOLTAGE GENERATION FOR DISPLAYS
Abstract:
A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
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