# US 2022/0044629 A1 · High-Brightness Mode on an OLED Display

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- Number: US 2022/0044629 A1
- Document ID: US20220044629A1
- Status: Published application
- Kind: A1
- Application number: 17/500,811
- Filed: 2021-10-13
- Published: 2022-02-10
- Earliest claimed: 2021-10-12
- Assignees: Google Inc.
- Applicants: Google LLC
- Inventors: Chien-Hui Wen; Sang Young Youn
- Web page: https://patentgrep.com/patent/US20220044629A1

## CPC

- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 3/3225: using an active matrix
- G09G 3/2018: {by time modulation using two or more time intervals}
- G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
- G09G 2320/0276: for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
- G09G 2320/0633: by amplitude modulation of the brightness of the illumination source
- G09G 2320/064: by time modulation of the brightness of the illumination source
- G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve
- G09G 2330/021: Power management, e.g. power saving
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

This document describes techniques and apparatuses for a high-brightness mode on an organic light emitting diode (OLED) display. The techniques and apparatuses set a high-brightness value in a register of a display driver integrated circuit (DDIC) associated with the OLED display of on electronic device. A processor of the electronic device provides a fewer-pulses command to the DDIC, which adjusts a pulse number to control the OLED display at fewer pulses per period. A gamma correction is determined based on the high-brightness value and used to alter content to be presented on the OLED display. As a result, fewer pulses are used in combination with the gamma correction to provide content on the OLED display at a high brightness.

## Claims

### Claim 1

A method for controlling screen brightness on an organic light emitting diode (OLED) display, the method comprising:
setting a first display brightness value within a display driver integrated circuit (DDIC) associated with the OLED display;
providing, in accordance with the first display brightness value, a first brightness on the OLED display by:
driving the OLED display at a first frequency, two or more pulses, and a first gamma correction set;
setting a second display brightness value within the DDIC associated with the OLED display, the second display brightness value greater than the first display brightness value; and
providing, in accordance with the second display brightness value, a second brightness on the OLED display by:
adjusting, by at least one processor separate from with the DDIC, to fewer pulses; and
driving the OLED display at the first frequency, the fewer pulses, and a second gamma correction set.

### Claim 2 (depends on 1)

A method as in claim 1, wherein providing the second brightness on the OLED display further comprises:
using a first supply voltage lower than a second supply voltage, the second supply voltage equal to a required voltage needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 3 (depends on 1)

A method as in claim 1, further comprising:
setting a third display brightness value within the DDIC associated with the OLED display, the third display brightness value less than the second display brightness value; and
providing, in accordance with the third display brightness value, a third brightness on the OLED display by:
adjusting, by the at least one processor separate from the DDIC, the fewer pulses to be more pulses than the fewer pulses; and
driving the OLED display at the first frequency, the more pulses, and a third gamma correction set.

### Claim 4 (depends on 3)

A method as in claim 3, wherein providing the third brightness on the OLED display further comprises:
determining the third gamma correction set for the third display brightness value.

### Claim 5 (depends on 1)

A method as in claim 1, wherein the fewer pulses is one pulse.

### Claim 6 (depends on 1)

A method as in claim 1, wherein providing the second brightness on the OLED display by driving the OLED display at the fewer pulses further comprises:
using a first pulse duration longer than a second pulse duration, the second pulse duration equal to a required pulse duration needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses; and
using a first pulse amplitude smaller than a second pulse amplitude, the second pulse amplitude equal to a required pulse amplitude needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 7 (depends on 6)

A method as in claim 6, wherein providing the second brightness on the OLED display by driving the OLED display at the fewer pulses further comprises:
using a first duty ratio higher than a second duty ratio, the second duty ratio equal to a required duty ratio used to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 8 (depends on 1)

A method as in claim 1, wherein the at least one processor is a system-on-chip (SoC).

### Claim 9 (depends on 1)

A method as in claim 1, wherein providing the second display brightness on the OLED display further comprises:
determining the second gamma correction set for the second display brightness value.

### Claim 10 (depends on 1)

A method as in claim 1, wherein the first display brightness value and the second display brightness value are set within a single register of the DDIC.

### Claim 11

A system for controlling screen brightness on an organic light emitting diode (OLED) display, the system comprising:
a display driver integrated circuit (DDIC) associated with the OLED display;
at least one processor separate from the DDIC; and
a computer-readable storage media that when executed by the at least one processor is configured to:
set a first display brightness value within a display driver integrated circuit (DDIC) associated with the OLED display;
provide, in accordance with the first display brightness value, a first brightness on the OLED display by:
driving the OLED display at a first frequency, two or more pulses, and a first gamma correction set;
set a second display brightness value within the DDIC associated with the OLED display, the second display brightness value greater than the first display brightness value; and
provide, in accordance with the second display brightness value, a second brightness on the OLED display by:
adjusting, by at least one processor separate from with the DDIC, to fewer pulses; and
driving the OLED display at the first frequency, the fewer pulses, and a second gamma correction set.

### Claim 12 (depends on 11)

A system as in claim 11, wherein providing the second brightness on the OLED display further comprises:
using a first supply voltage lower than a second supply voltage, the second supply voltage equal to a required voltage needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 13 (depends on 11)

A system as in claim 11, wherein the computer-readable storage media, when executed by the at least one processor, is further configured to:
set a third display brightness value within the DDIC associated with the OLED display, the third display brightness value less than the second display brightness value; and
provide, in accordance with the third display brightness value, a third brightness on the OLED display by:
adjusting, by the at least one processor separate from the DDIC, the fewer pulses to be more pulses than the fewer pulses; and
driving the OLED display at the first frequency, the more pulses, and a third gamma correction set.

### Claim 14 (depends on 13)

A system as in claim 13, wherein providing the third brightness on the OLED display further comprises:
determining the third gamma correction set for the third display brightness value.

### Claim 15 (depends on 11)

A system as in claim 11, wherein the fewer pulses is one pulse.

### Claim 16 (depends on 11)

A system as in claim 11, wherein providing the second brightness on the OLED display by driving the OLED display at the fewer pulses further comprises:
using a first pulse duration longer than a second pulse duration, the second pulse duration equal to a required pulse duration needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses; and
using a first pulse amplitude smaller than a second pulse amplitude, the second pulse amplitude equal to a required pulse amplitude needed to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 17 (depends on 16)

A system as in claim 16, wherein providing the second brightness on the OLED display by driving the OLED display at the fewer pulses further comprises:
using a first duty ratio higher than a second duty ratio, the second duty ratio equal to a required duty ratio used to provide the second brightness on the OLED display by driving the OLED display at more pulses than the fewer pulses.

### Claim 18 (depends on 11)

A system as in claim 11, wherein the at least one processor is a system-on-chip (SoC).

### Claim 19 (depends on 11)

A system as in claim 11, wherein providing the second display brightness on the OLED display further comprises:
determining the second gamma correction set for the second display brightness value.

### Claim 20 (depends on 11)

A system as in claim 11, wherein the first display brightness value and the second display brightness value are set within a single register of the DDIC.