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Adaptive dimming OLED drive circuit

A driving circuit, self-adaptive technology, applied in the direction of electric light circuit layout, light source, electric light source, etc., can solve the problems of high power consumption and poor human eyes, achieve vision protection, achieve vision, and prevent color shift. Effect

Inactive Publication Date: 2015-07-29
CHENGDU RUIYI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing OLED circuit uses the control signal of the controller to drive the driving circuit to drive the OLED. However, the brightness of the OLED is constant regardless of day or night. Too high brightness in a dark environment is not only bad for human eyes, but also consumes power. large

Method used

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  • Adaptive dimming OLED drive circuit
  • Adaptive dimming OLED drive circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 The OLED drive circuit for adaptive dimming shown includes a controller, a drive circuit and an OLED connected in sequence, the controller outputs a PWM signal to the drive circuit, and the connection between the OLED and the input terminal of the controller A light intensity monitoring device is connected.

Embodiment 2

[0021] Such as figure 1 An adaptive dimming OLED driving circuit shown in this embodiment is optimized on the basis of the above embodiments, that is, both the controller and the illuminance monitoring device are connected with a voltage stabilizing circuit, and the stabilizing The input terminal of the voltage circuit is connected to the resistance-capacitance power supply circuit.

Embodiment 3

[0023] Such as figure 1 with figure 2 An adaptive dimming OLED drive circuit is shown. This embodiment optimizes the drive circuit on the basis of the above embodiments, that is, the drive circuit includes a chip NCL30160, and the CS pin of the chip NCL30160 The third resistor connected to the ground is connected to the ROT pin of the chip NCL30160. The first resistor and the first capacitor connected in series are connected to the first capacitor. The non-common end of the first capacitor is grounded. The VCC pin of the chip NCL30160 is connected to the On the common end of a resistor and the first capacitor, the VIN pin of the chip NCL30160 is connected with a grounded second capacitor, and the LX pin of the chip NCL30160 is connected with an inductor and connected to the anode of the diode through the fourth resistor, so The cathode of the aforementioned diode is connected to the VIN pin.

[0024] A second resistor is connected in parallel with the first resistor.

[00...

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PUM

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Abstract

The invention discloses an adaptive dimming OLED drive circuit comprising a controller, a drive circuit and an OLED which are connected sequentially. The controller outputs PWM signals to the drive circuit, a brightness monitoring device is connected between the OLED and the input end of the controller, the loop control is adopted, the brightness of the OLED can be adjusted automatically, and energy is saved.

Description

technical field [0001] The present invention relates to the field of OLED control circuits, and more specifically relates to an OLED drive circuit for adaptive dimming. Background technique [0002] OLED is an organic light-emitting diode. The basic structure is a thin and transparent indium tin oxide with semiconducting properties, which is connected to the positive electrode of electricity, and another metal cathode is added to form a sandwich structure. The whole structural layer includes: hole transport layer (HTL), light emitting layer (EL) and electron transport layer (ETL). When the power is supplied to an appropriate voltage, the positive holes and the negative charges will combine in the light-emitting layer to produce light, and the three primary colors of red, green and blue RGB will be produced according to their formulas to form the basic colors. The characteristic of OLED is that it emits light by itself, so it has high visibility and brightness, followed by l...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 汪斌张昕
Owner CHENGDU RUIYI INFORMATION TECH