Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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FLEXIBLE DISPLAY

By

P. SAIKIRAN(12631A0469)

Electronics And Communication Engg.

Guide:S. BALAIAH M.Tech,(Ph.D)

Asso. Professor

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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AIM

• To understand the various flexible display technologies.• To reduce the breaking of

glass of mobile phones.

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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What Makes Flexible Display Attractive ?

• Light weight• Very thin• The ability to curve• Portability• Low power

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Different Types Of Flexible Display Technologies

Based on either Reflectivity or Emissivity:there are two forms of displays

• Flexible E-Paper based displays and• Flexible LED based displays.

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Construction of E-Paper

• It has two different parts•Front plane•Back plane

• The front plane consist of E-ink• The back plane consist of

electronic circuits• To form an E-ink electronic

display the ink is printed onto a plastic film that is laminated to a layer of circuitry

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Functionality

• The new paper phone is made of two layers: the e-ink display and a flexible printed circuit with bend sensors.

• Flexible printed circuit with resistive bend circuits, which are used to identify the bending of the display screen.

• The user actually chooses the function by bending the PCB

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Structure of OLED Technology

• Substrate• Anode • Cathode • Conductive layer• Emissive layer

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Working Of OLED Technology • A voltage is applied across

the OLED such that the anode is positive with respect to the cathode.

• Current flows from cathode to anode through the organic layers.

• Electron and hole combine and emit light.

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Flexible OLED• A flexible OLED is a

type of OLED incorporating a flexible plastic substrate on which the electroluminescent organic semiconductor is deposited.

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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APPLICATIONS

• Lighting:• Cell Phones: • Transparent Car Navigation System on

Windshield:• Information media, watch, price tag• Notebook PC, desktop• TV, HDTV, Large displays education,

advertisement, video walls

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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ADVANTAGES

• Thinner, Lighter ,Flexible

• Low Power Consumption

• High brightness

• Contrast Ratio Over 1,000,000:1

• Low cost and size

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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DISADVANTAGES

• Limited market availability.• Less Lifetime• Manufacturing• Damage by water

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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FUTURE SCOPE

• Flexible displays are evolving as the next generation displays. • Improve hardware that can refresh page

quickly• More advanced wireless capabilities

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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CONCLUSION

• Flexible electronic displays have the opportunity to revolutionize an Industry.

• Effort to understand the failure limits and mechanisms have been gaining momentum.

• As the components and manufacturing processes of flexible electronics mature, the concept of flexible flat panel display will eventually become a reality.

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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REFERENCES

• www.slideshare.com

• www.youtube.com

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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THANK YOU

Wednesday, May 3, 2023 SRI VENKATESWARA ENGINEERING COLLEGE

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Quires..?