A display device and control method

Abstract

Embodiments of the present invention provide a display device and a control method, in the field of display technology, which can solve the limitation in the prior art that the brightness of the display screen can only be adjusted by compensating the threshold voltage; the display device includes: a processor, a timing controller, Data driving circuit; each sub-pixel is correspondingly provided with a photosensitive module, and the photosensitive module is at least partly facing the sub-pixel, so as to detect the actual brightness value of each sub-pixel through the photosensitive module; the processor is used to input multiple settings according to the sub-pixel The actual luminance value and the target luminance value of the given display data to obtain the sub-pixel compensation mapping relationship; the compensation mapping relationship is the corresponding relationship between each first display data and the second display data within the value range of the sub-pixel display data, The second display data is obtained by compensating the first display data; the timing controller is used to output the second display data obtained according to the compensation mapping relationship to the data driving circuit, so as to apply corresponding pixel voltages to the sub-pixels.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display device and a control method. Background technique [0002] The uniformity of the display screen of the display device is an important parameter index for evaluating the quality of the display device; taking an organic light emitting diode (Organic Light Emitting Diode, referred to as OLED) display device as an example, it has self-illumination, high luminous efficiency, and long response time. Short, high-definition, and high-contrast advantages make it the display device with the most development potential at present. [0003] Existing OLED display devices are mainly divided into two categories: AMOLED (Active Matrix OLED) and PMOLED (Passive Matrix OLED). Among them, AMOLED has low production cost, wide operating temperature range, and can be used for DC drive of portable devices. The advantages of high-definition large-size display devices are more and more...

AI Technical Summary

Problems solved by technology

However, there are still many factors that cause uneven brightness of the display panel, such as the aforementioned aging, the resistance voltage drop of the power line, etc., and the data compensation circuit of the prior art cannot solve the uneven brightness caused by the non-threshold voltage change. The problem

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