阅读说明：本技术 显示器降级补偿 (Display degradation compensation ) 是由 M·乔伊 R·迪徳 M·莫里斯 Y·郑 于 2018-11-09 设计创作，主要内容包括：显示驱动器电路包括：其中存储多个伽玛调整数据集的第一存储器,该多个伽玛调整数据集中的每个伽玛调整数据集对应于相应的显示器降级量；其中存储选择指令和补偿指令的第二存储器；以及处理器,该处理器经由执行选择指令而被配置成基于指示过去显示操作的使用数据来选择该多个伽马调整数据集之一。该处理器经由执行补偿指令而被进一步配置成根据所选的伽马调整数据集来生成驱动控制信令,以补偿由过去显示操作引起的显示器降级。(The display driver circuit includes: a first memory in which a plurality of gamma adjustment data sets are stored, each gamma adjustment data set of the plurality of gamma adjustment data sets corresponding to a respective amount of display degradation; a second memory in which a selection instruction and a compensation instruction are stored; and a processor configured, via execution of the selection instructions, to select one of the plurality of gamma adjustment data sets based on usage data indicative of past display operations. The processor is further configured, via execution of the compensation instructions, to generate drive control signaling in accordance with the selected gamma adjustment data set to compensate for display degradation caused by past display operations.)

1. A display, comprising:

a first memory in which a plurality of gamma adjustment data sets are stored, each gamma adjustment data set of the plurality of gamma adjustment data sets corresponding to a respective amount of display degradation;

a second memory in which a selection instruction and a compensation instruction are stored; and

a processor configured, via execution of the selection instructions, to select one of the plurality of gamma adjustment data sets based on usage data indicative of past display operations;

wherein the processor is further configured, via execution of the compensation instructions, to generate drive control signaling to compensate for display degradation caused by the past display operation according to the selected gamma adjustment data set.

2. The display of claim 1, wherein the usage data comprises data indicating a length of a time period of the past display operation.

3. The display of claim 1, wherein the usage data comprises data indicating a brightness level of the past display operation.

4. The display of claim 1, wherein:

the processor is further configured to calculate a usage parameter based on usage data indicative of the past display operation; and

the processor, via execution of the selection instructions, is further configured to select one of the plurality of gamma adjustment data sets according to the usage parameter.

5. The display of claim 1, wherein:

the processor, via execution of the selection instruction, is further configured to determine a gamma adjustment profile from a selected gamma adjustment data set of the plurality of gamma adjustment data sets; and

the processor, via execution of the compensation instructions, is further configured to generate the drive control signaling in accordance with the gamma adjustment profile.

6. The display of claim 1, wherein each gamma adjustment data set of the plurality of gamma adjustment data sets relates to gamma adjustment for a respective sub-pixel color.

7. The display of claim 1, further comprising a plurality of display zones, wherein the processor is configured to iteratively implement the selection instructions and the compensation instructions to compensate the display degradation for each display zone of the plurality of display zones, respectively.

8. The display of claim 1, wherein the first memory comprises a plurality of programmable storage units, each programmable storage unit of the plurality of programmable storage units storing a respective gamma adjustment data set of the plurality of gamma adjustment data sets.

9. The display of claim 1, further comprising a data storage unit in which the first memory and the second memory are integrated with each other.

10. A method of controlling a display, the method comprising:

obtaining usage data indicative of past operation of a pixel array of the display;

selecting a gamma adjustment profile of a plurality of gamma adjustment profiles based on the obtained usage data;

generating control signaling for drive circuitry of the display according to the selected gamma adjustment profile; and

generating, via the drive circuitry, a drive voltage signal for the pixel array in response to the generated control signaling.

11. The method of claim 10, wherein obtaining the usage data comprises tracking a length of a slot of the past operations.

12. The method of claim 10, wherein selecting the gamma adjustment profile comprises determining an amount of degradation based on the obtained usage data.

13. The method of claim 10, wherein selecting the gamma adjustment profile comprises interpolating a simulated gamma adjustment profile according to the selected gamma adjustment profile.

14. The method of claim 10, wherein generating the control signaling comprises:

receiving feedback from the pixel array; and

external compensation is achieved based on the received feedback.

15. The method of claim 10, wherein the act of selecting the gamma adjustment profile is accomplished for each subpixel color of the display.

Background

Organic Light Emitting Diode (OLED) displays typically degrade over time. For example, the brightness of an OLED display typically decreases as the OLED structure in each pixel of the display ages and is used. Luminance decreases as the efficiency of the organic materials in the OLED structure degrades.

The OLED display is configured to compensate for efficiency degradation. In one compensation technique, each pixel of the display is configured with additional circuitry for use in degrading efficiency. In another compensation technique, gamma control voltages are generated to achieve gray scale adjustment to achieve a desired brightness level.