Method and apparatus for updating data in memory for electrical compensation

Abstract

A method for updating data in a memory for electrical compensation is provided, comprising: writing the serial number or predetermined value of the currently updated block into a non-volatile memory when a main control chip receives a power-off signal. This disclosure only needs to add a non-volatile memory outside the main control chip to store the number (which block) of the currently updated block when the power is off. When starting up again, determine which rows of data are lost according to the number of the block, and then replace them with adjacent row data. The operation is simple, efficient, and the data update time is short. The most important thing is that it will not affect the life of the memory device. .

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, relates to a method and a device for preventing necessary data loss caused by power failure during active matrix organic light emitting diode (AMOLED, active matrix organic light emitting diode) electrical compensation and Nor memory data update . Background technique [0002] The AMOLED display device is a self-luminous element, and its basis is an organic light emitting diode (OLED, organic light emitting diode). The OLED utilizes organic semiconductor materials and light-emitting materials to undergo carrier injection and recombination under the drive of an electric field to emit light. Due to many advantages such as high brightness, clear image quality, ultra-thin thickness, and good display performance, AMOLED display devices are expected to be more widely used. [0003] An AMOLED display device is composed of tens of thousands of pixels each including an OLE...

AI Technical Summary

Problems solved by technology

The problem that this method exists is: every time the data of 1 block is updated, the backup block must be erased and written, and each time more than one thousand blocks of the memory are updated, the backup block must be erased and written more than a thousand times, which seriously reduces the memory capacity. life, become the bottleneck of product life

At the same time, because the data of each block must be backed up (erase and write the backup block) before updating, the update time is doubled, and the operation of the identification bit is very complicated, requiring frequent switching of the read and write modes of the memory (a large amount of data Read and write and a small amount of data read and write adopt different modes), resulting in very low read and write efficiency

Images