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Structured polmer substrate for ink-jet printing of an OLED matrix

A technology of photopolymerization and polymer materials, applied in the field of pixel components, can solve the problems of limiting the degree of freedom of design spacers, and achieve the effect of enhanced reception and retention and high resolution

Inactive Publication Date: 2005-06-08
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fabrication method limits the freedom to design the spacers as well as the achievable resolution and height of the structures

Method used

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  • Structured polmer substrate for ink-jet printing of an OLED matrix
  • Structured polmer substrate for ink-jet printing of an OLED matrix
  • Structured polmer substrate for ink-jet printing of an OLED matrix

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Experimental program
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Effect test

Embodiment Construction

[0063] figure 1 Representing a top view of a generic matrix substrate 1 , the grid with spacers forms a matrix of compartments or pixels 7 . The compartment 7 is composed of horizontal partitions 2 and vertical partitions 6 . A row of compartments formed between the horizontal spacers 2 is hereinafter referred to as a channel 5 . When the channel 5 is printed, the liquid 4 spreads over the entire channel 5 .

[0064] figure 2 represents a matrix substrate 201 according to the prior art such as figure 1 An enlarged cross-sectional view of the spacer of the matrix substrate. A cross-sectional view of horizontal spacers 202 is shown, and a side view of vertical spacers 206 is also shown in order to clearly represent the physical layout. The spacers are generally formed by means of photolithography to form a deposited photoresist layer. Due to the low resolution in the photolithographic process, special profile structures cannot be formed in the spacers 202 and 206 .

[00...

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PUM

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Abstract

The present invention provides a matrix substrate for controlling a liquid printed on said substrate, and a method of manufacturing such a substrate. According to the invention, the substrate used to hold the matrix of pixels for receiving and holding the printed liquid is made of a deformable and bendable material, which enables the separation of the raised structures (spacers) to be in the substrate material itself formed pixels. This enables many new manufacturing methods to be used to fabricate matrix substrates, eg for polyLED displays. The materials and methods of manufacture according to the present invention also eliminate many of the limitations on design freedom that exist with materials and methods of manufacture according to the prior art. This enables the formation of spacer profiles with overhanging structures, improved resolution and new size ranges.

Description

technical field [0001] The present invention relates to a pixel assembly on a substrate for controlling a liquid printed on said substrate, and more particularly to a method and material for making such a pixel assembly. [0002] An organic electroluminescent display such as PolyLED is a type of flat panel display consisting of a matrix of pixels with an anode, a cathode and a thin layer of semiconductor material, each pixel forming a light emitting diode. The lateral size of a pixel is related to the resolution of the display, for example, a monochrome display with 100 pixels per inch (100 PPI) has pixels of 254×254 microns. A 127PPI full-color display has 66.7 x 200 micron pixels. The thin layer of semiconductor material is approximately 0.3 microns thick. The compounds in each pixel are typically deposited by an inkjet printing process after being dissolved in a solvent. To control the printed liquid, these pixels are defined as a matrix of small compartments separated b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/10H01L27/32H01L51/00H01L51/40H01L51/50H01L51/52H05B33/02H05B33/12H05B33/22
CPCY02E10/549Y02P70/50H10K59/173H10K59/122H10K71/135H10K71/20H10K77/10H10K50/80
Inventor P·C·杜恩埃维德J·F·迪克斯曼
Owner KONINK PHILIPS ELECTRONICS NV