Driving voltage control method and device, array substrate, display device

Abstract

The invention provides a driving voltage control method and device, an array substrate, and a display device, wherein the driving voltage control device is used to control the driving voltage output to one end of several light-emitting devices in an array substrate; several light-emitting devices are located at Among the several pixel units in the display area of ​​the array substrate; several preset areas with the pixel unit as the minimum unit are preset in the display area; corresponding to any preset area, the device includes: an acquisition module for acquiring any The brightness value of the pixel unit with the highest brightness in the preset area within a frame; the search module is used to search the corresponding driving voltage value according to the brightness value obtained by the acquisition module in the preset table; the control module is used to search the corresponding driving voltage value according to the search module The obtained driving voltage value controls the driving voltage output to all pixel units in the preset area in the next frame. The present invention can reduce the driving voltage of the display device in any picture without affecting the display effect of the picture.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving voltage control method and device, an array substrate, and a display device. Background technique [0002] In existing display devices, there is a technical solution for reducing power consumption by adjusting the driving voltage at one end of the light emitting device. For example, in an existing AMOLED (Active-Matrix Organic Light Emitting Diode, active matrix organic light-emitting diode) display device, the cathode voltage of the OLED device can be controlled by the control waveform output by the timing control circuit (Time Controller, TCON) provided by an external power source. Therefore, by calculating the luminance value of the entire frame and finding the voltage corresponding to the luminance value, a lower cathode voltage can be used to drive the OLED device to emit light, thereby reducing the power consumption of the AMOLED display device. [0003...

AI Technical Summary

Problems solved by technology

[0003] For a pure grayscale picture or a picture with relatively uniform brightness, the above technical solution can achieve better results; but for a picture with a large difference between the maximum brightness value and the minimum brightness value, the above technical solution may not achieve the effect of reducing power consumption , or cause a large brightness loss to the frame, affecting the display effect of the entire display device

However, in common application scenarios, pictures with uniform brightness or pure gray scale are rare, so the above solutions usually cannot achieve significant power consumption reduction effects, or can achieve power consumption reduction effects, but need to give the picture The display effect has adverse effects

Images