# US 2021/0241690 A1 · Organic light emitting diode display thermal management

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- Number: US 2021/0241690 A1
- Document ID: US20210241690A1
- Status: Published application
- Kind: A1
- Application number: 17/240,633
- Filed: 2021-04-26
- Published: 2021-08-05
- Earliest claimed: 2019-10-24
- Assignees: Dell Products L.P.
- Applicants: Dell Products L.P.
- Inventors: Jong Seo Lee; Deeder M. Aurongzeb; Asim M. Siddiqui
- Web page: https://patentgrep.com/patent/US20210241690A1

## CPC

- G06F 1/20: Cooling means
- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G06F 1/1618: {the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure}
- G06F 1/206: {comprising thermal management}
- G09G 3/2092: {Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165)}
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 2320/0242: Compensation of deficiencies in the appearance of colours
- G09G 2320/0271: Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G 2320/041: Temperature compensation
- G09G 2320/0626: for control of overall brightness
- G09G 2330/021: Power management, e.g. power saving
- G09G 2340/0435: Change or adaptation of the frame rate of the video stream
- G09G 2354/00: Aspects of interface with display user
- G09G 2380/02: Flexible displays
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

An information handling system organic light emitting diode (OLED) display adapts presentation of visual information to manage a display thermal state, such as to maintain a uniform thermal condition. In one example embodiment, a first display zone of plural pixels presents visual images with a first refresh rate, such as the nominal refresh rate established by the display settings, and a second display zone presents visual images with a partial pixel refresh rate that reduces power dissipation and, thus, thermal energy release so that a more uniform thermal state may be achieved at the display.

## Claims

### Claim 1

A system for managing thermal conditions associated with an organic light emitting display (OLED), the system comprising:
a non-transitory memory operable to store instructions; and
instructions stored in the non-transitory memory that when executed on a processor are operable to:
detect a thermal state of an OLED display;
present visual images at a first zone of the OLED display with a full pixel refresh rate; and
present visual images at a second zone of the OLED display with a partial pixel refresh rate set to achieve an adjustment of the thermal state.

### Claim 2 (depends on 1)

The system of claim 1 wherein the instructions are further operable to:
retrieve degradation information associated with the plural pixels of the second zone; and
apply the degradation information to provide the adjustment of the thermal state.

### Claim 3 (depends on 1)

The system of claim 1 wherein the instructions are further operable to:
present visual images in the first zone with a full pixel density; and
present visual images in the second zone with a partial pixel density.

### Claim 4 (depends on 3)

The system of claim 3 wherein the partial pixel density comprises a dynamically adjusted ratio of pixels in an on state and an off state based upon the thermal state.