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Top-light-emission full-color organic light emitting diode (OLED) display

A top-emitting and display technology, applied in the field of display manufacturing, can solve the problems of low display yield and limit the market promotion and application of OLED full-color display screens, and achieve the effects of high yield, high precision, and improved manufacturing cost-effectiveness.

Inactive Publication Date: 2013-02-13
李崇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The traditional full-color technology for manufacturing small and medium-sized OLED displays mostly uses top-emitting red, green, and blue primary color evaporation technology. This technology is limited by the precision of the metal evaporation mask. The highest precision of the produced display is only about 200ppi. On the other hand, due to the need for accurate alignment of the three primary colors in the device, the yield rate of display manufacturing is not high, and usually only about 60% of the yield rate can be achieved. The current status of the industrialization of these OLED displays limits the OLED full-color display market. Promote applications especially in the smartphone application market

Method used

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  • Top-light-emission full-color organic light emitting diode (OLED) display
  • Top-light-emission full-color organic light emitting diode (OLED) display
  • Top-light-emission full-color organic light emitting diode (OLED) display

Examples

Experimental program
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Effect test

Embodiment 1

[0104] figure 2 Shown is the first structure of the top-emitting full-color OLED display of the present invention, which is mainly composed of a filter substrate, a color conversion film layer, an OLED light-emitting device, and a driving unit 11 for driving the OLED light-emitting device to emit light; The filter substrate is mainly composed of a transparent substrate 1, a blue filter film layer 2, a black matrix grid film layer 3, a green filter film layer 4 and a red filter film layer 5, and the blue filter film layer Layer 2, green filter film layer 4 and red filter film layer 5 are covered on the transparent substrate 1; the OLED light-emitting device is made on the drive unit 11, and the OLED light-emitting device is composed of a light-transmitting electrode layer 8, an organic The light-emitting functional material film layer combination 9 and the reflective electrode layer 10 are composed. The light-transmitting electrode layer 8 is adjacent to the above-mentioned co...

Embodiment 2

[0153] image 3 Shown is the second structural form of the full-color OLED display of the present invention, which is the same as figure 2 The structural form shown in is different in that the color conversion film layer constituting the full-color OLED display continuously covers the top electrode of the OLED light-emitting device of the red pixel, the top electrode of the OLED light-emitting device of the green pixel, and the space between them Above, the photoluminescence of the green color conversion material serves both green and red pixels.

Embodiment 3

[0155] Figure 4 Shown is the third structural form of the full-color OLED display of the present invention, which is the same as figure 2 The structural form shown in is different in that the color conversion film layer constituting the full-color OLED display not only covers the top electrode of the green light-emitting pixel OLED light-emitting device, but also covers the top electrode of the red OLED light-emitting device , the photoluminescence of the green color conversion material serves both green and red pixels. Compared with Example 2, this compositional feature is only a difference in the selectivity of the process of the color change film layer, and does not affect the efficiency performance of the full-color OLED display.

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Abstract

The invention relates to a top-light-emitting full-color organic light emitting diode (OLED) display, which comprises a filter substrate, a color conversion film layer, an OLED light emitting device and a driving unit. The display is characterized in that the color conversion layer is a green color conversion film layer and covers light transmittance electrode layers of the OLED light emitting device corresponding to the green filter film layer; and under the condition of power-on, the luminescence spectrum of electroluminescence generated by the OLED light emitting device in a power-on state comprises a blue-color light emitting component of which the CIE color coordinate Y value is less than 0.55 and a red color light emitting component of which the CIE color coordinate X value is more than 0.64. The conventional manufacturing method and the conventional manufacturing process for the full-color OLED display having various color conversion modes are developed and created and a novel technology for manufacturing the top-light-emission full-color OLED display is creatively provided; and the top-light-emission full-color OLED display manufactured by the technology has the advantages of high fineness, high yield and the like and is favorable for improving the total manufacturing cost performance of the display.

Description

technical field [0001] The invention relates to a full-color organic electroluminescence (OLED) display manufactured by using color conversion technology, in particular to a top-emitting full-color OLED display, which belongs to the technical field of display manufacturing. Background technique [0002] In the prior art, there are usually three different production methods for full-color OLED light-emitting displays: the first is to directly apply an electric field to different OLED light-emitting devices on the pixel matrix, so as to obtain independent red, green and blue light-emitting "red, green and blue three primary colors" Light-emitting mode"; the second is to use different color filters to cut the background white OLED light-emitting device to produce OLED light, so as to obtain the "white light plus filter method" of red, green and blue three primary colors; the third is to pass The color conversion film layer absorbs the effective OLED light-emitting components in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/50
Inventor 李崇
Owner 李崇
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