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Application of near-infrared light emitting pixels in structure of OLED screen mobile terminal

A mobile terminal, near-infrared technology, applied in the direction of telephone structure, telephone communication, electrical components, etc., can solve the problems of complicated process, high manufacturing cost, and inability to manufacture, and achieve wide application range, high screen-to-body ratio, and reduced volume effect

Inactive Publication Date: 2018-03-06
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if inorganic microLEDs are possible to achieve small size, the preparation cost is high, the process is complicated, and it cannot be prepared on plastic substrates
Therefore, the development of inorganic LEDs is limited in the application of some mobile terminal equipment including mobile phones

Method used

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  • Application of near-infrared light emitting pixels in structure of OLED screen mobile terminal
  • Application of near-infrared light emitting pixels in structure of OLED screen mobile terminal
  • Application of near-infrared light emitting pixels in structure of OLED screen mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A mobile terminal device with an OLED screen having near-infrared light-emitting pixels includes a mobile phone screen, and cooperates with a near-infrared image sensing element to realize identity recognition. Identification includes face recognition, iris recognition, and sclera recognition.

[0028] The mobile terminal is a mobile phone screen, and the mobile phone screen is composed of a screen substrate, an anode, a grid, a TFT drive circuit, a negative drive voltage line, a display unit, a cathode, a touch circuit, a polarizer, and a glass screen. Including a near-infrared organic light-emitting diode, the near-infrared organic light-emitting diode is composed of a light-emitting substrate, an anode, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and a cathode, and the light-emitting layer is a near-infrared organic light-emitting layer , the near-infrared light-emitting layer is composed of a plurality of pixel...

Embodiment 2

[0037] The difference with Embodiment 1 is that in this embodiment, the near-infrared light-emitting diode device is close to the front sensor and camera at the upper end of the screen, such as image 3 , to provide near-infrared light for sensors and cameras. This way the light source is concentrated.

Embodiment 3

[0039]The near-infrared organic thin-film photodetector uses organic materials as photosensitive materials. The organic materials can be single-component materials or mixed-component materials, and are sensitive to near-infrared light. When light is incident, the organic photosensitive material absorbs the light and generates excitons. Under the action of the built-in electric field, excitons separate and move to generate photoelectromotive force, that is, electrical signals. Taking advantage of the advantages of organic materials, the near-infrared organic thin film photodetector is integrated into the display panel of mobile terminals including mobile phones, and cooperates with near-infrared organic light-emitting diodes.

[0040] Among them, the near-infrared organic thin film photodetector is composed of a receiver and a detection circuit. Near-infrared organic light-emitting diodes provide a light source, when the light is reflected back, the near-infrared organic film ...

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Abstract

The invention discloses application of near-infrared light emitting pixels in the structure of an OLED screen mobile terminal. The mobile terminal is a mobile phone screen which is composed of a screen substrate, an anode, a grid electrode, a TFT driving circuit, a driving voltage cathode line, a display unit, a cathode, a touch circuit, polarizers and a glass screen; the display unit comprises anear-infrared organic light emitting diode which is composed of a light emitting substrate, an anode, a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layerand a cathode, wherein the light emitting layer is a near-infrared organic light emitting layer which is composed of multiple pixel points, and all the pixel points are controlled by the TFT circuit;and the display unit further comprises a red or green or blue or white light emitting diode and is formed by combining and permutating pixel points of the near-infrared light emitting diode and pixelpoints of the red or green or blue or white light emitting diode on the same light emitting substrate. According to application of the near-infrared organic material in the mobile terminal, the defects of inorganic semiconductor near-infrared device preparation are effectively overcome, the application range is wide, and a new function can be developed.

Description

technical field [0001] The invention belongs to the field of imaging and light sensors, and in particular relates to the application of a near-infrared luminous pixel in an OLED screen mobile terminal structure. Background technique [0002] Detectors sensitive to near-infrared light have been widely used in remote sensing, military affairs, and detection. Inorganic semiconductors with small band gaps are generally used to make near-infrared photodetectors. Mobile terminals, including mobile phones, have used near-infrared distance sensors to measure the distance by detecting the intensity of infrared rays. Generally, the effective distance is within 10 cm. The distance sensor has both transmitting and receiving devices, and is generally large in size. [0003] Near-infrared light is invisible to the human eye and has a wavelength range of around 760-2500 nm. The near-infrared band has many applications in military and civilian fields. Usually near-infrared light is used ...

Claims

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Application Information

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IPC IPC(8): H04M1/02H01L27/32
CPCH04M1/0266H10K59/12
Inventor 廖良生胡云
Owner SUZHOU UNIV
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