OLED (organic light emitting diode) screen signal generator with power supply stability

Abstract

The invention relates to an OLED (organic light emitting diode) screen signal generator with power supply stability. The OLED screen signal generator comprises an ARM [advanced RISC (reduced instruction set computer) machine] processor. A first I<2>C (inter-integrated circuit) communication end of the processor is connected with an input end of a first analog-digital conversion module, an output end of the first analog-digital conversion module is connected with an input end of a first operational amplifier, and an output end of the first operational amplifier is connected with a voltage feedback end of a direct-current-to-direct-current module; a second I<2>C communication end of the processor is connected with an input end of a second analog-digital conversion module, an output end of the second analog-digital conversion module is connected to an input end of a second operational amplifier, and an output end of the second operational amplifier is connected with a voltage feedback endof a low-dropout regulator; a first power supply is connected with a voltage input end of the direct-current-to-direct-current module, an output end of the direct-current-to-direct-current module isconnected with a voltage input end of the low-dropout regulator, and power supplies can be provided to OLED screens by a voltage output end of the low-dropout regulator.

Description

technical field [0001] The invention belongs to the field of optoelectronics, in particular to an OLED screen signal generator, in particular to a control circuit of an OLED screen signal generator with stable power supply. Background technique [0002] Organic light-emitting diodes (Organic Light-Emitting Diode, OLED) are also known as organic electro-laser displays and organic light-emitting semiconductors. It was discovered in the laboratory by Chinese-American professor Ching W. Tang in 1979. OLED display technology has the advantages of self-illumination, wide viewing angle, almost infinitely high contrast ratio, low power consumption, and extremely high response speed, and is widely used in the field of display screens. [0003] At present, because various OLED screen manufacturers have emphasized that the voltages of several channels of power supply to OLED screens must be accurate and stable, otherwise there will be lines, abnormal screens, and screen jitters when t...

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Problems solved by technology

[0005] The present invention provides an OLED screen signal generator with stable power supply, the purpose of which is to solve the poor voltage stability of the signal generator in the prior art for powering the OLED screen, resulting in lines and abnormal pictures when clicking on the screen. The screen shakes and other phenomena, and in severe cases, the screen will be burned

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