Adjusting module, testing method and display device
A technology for display devices and modules, applied in static indicators, instruments, etc., can solve the problems of large differences in brightness and color coordinates of display devices, and achieve the ability to display colors stably, reduce values, and stabilize the power supply voltage.
Active Publication Date: 2020-07-10
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0003] The main purpose of the present invention is to provide an adjustment module, a test method and a display device to solve the problems in the prior art when the OPR of the display device is changed, which causes the brightness and color coordinates of the display device to be different due to the different IR voltage drop of the power supply voltage at different OPRs. The problem of big difference before and after waiting
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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] The transistors used in all embodiments of the present invention may be triodes, thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the control pole, one pole is called the first pole, and the other pole is called the second pole.
[0049] In actual operation, when the transistor is a triode, the contr...
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Abstract
The invention provides an adjusting module, a testing method and a display device. The adjusting module is applied to the display device, the display device comprises a power management integrated circuit and a display panel, and the display panel comprises a pixel circuit; the power supply management integrated circuit outputs a power supply voltage to the pixel circuit through a power supply voltage output end; the adjusting module comprises a feedback circuit and an adjusting circuit; the feedback circuit is used for feeding back the voltage of a specific point on the power supply voltage output line to the adjusting circuit; the power supply voltage output line is a connecting line between the power supply voltage output end and the pixel circuit; the voltage of a specific point on thepower supply voltage output line is a feedback voltage; and the adjusting circuit is used for receiving the feedback voltage through a feedback voltage input end and adjusting the power supply voltage output by the power supply management integrated circuit through the power supply voltage output end according to the feedback voltage. The color display capability of the display device is stabilized.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an adjustment module, a testing method and a display device. Background technique [0002] Another important evaluation indicator for evaluating the display uniformity of an AMOLED (Active-matrix organic light-emitting diode, active matrix organic light-emitting diode) display device is ΔE4, which is used to evaluate the OPR (Open Pixel Ratio, light-emitting pixel) of an AMOLED display device When the proportion of all pixels) changes, the magnitude of the difference in brightness and color coordinates of the AMOLED display device, the smaller the value of ΔE4, the better the color retention and the more accurate the color display. Contents of the invention [0003] The main purpose of the present invention is to provide an adjustment module, a test method and a display device to solve the problems in the prior art when the OPR of the display device is changed, which causes th...
Claims
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Login to View More IPC IPC(8): G09G3/3225G09G3/00
CPCG09G3/006G09G3/3225
Inventor 姜燕妮
Owner BOE TECH GRP CO LTD