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Color filter and light-emitting display element

一种发光显示、滤色器的技术，应用在光学元件、电气元件、偏振元件等方向，能够解决减少发光元件光使用效率等问题，达到防止光使用率的降低的效果

Inactive Publication Date: 2012-06-13
UDC IRELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, since the linear polarizing plate is arranged in the light paths of red, blue, and green lights, the light transmittance is reduced to about 50% due to the presence of the linear polarizing plate, seriously reducing the light use efficiency of the light-emitting element

Method used

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  • Color filter and light-emitting display element
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  • Color filter and light-emitting display element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0605]

[0606] "Manufacture of RGBW color filter 1"

[0607] On a glass substrate for manufacturing a color filter, black resist CK-8400 (product of FUJIFILM Electronic Materials Co., Ltd.) was applied to have a thickness of 1.0 μm (after drying) by a spin coater, and then heated at 120° C. Dry under the same conditions for 2 minutes, thereby forming a uniform black coating film.

[0608] Then, using an exposure device, use light with a wavelength of 365nm at 300mJ / cm 2 The obtained coated film was irradiated through a mask 100 μm thick under exposure dose. After the irradiation, the exposed film was developed at 26° C. for 90 sec with a developer of 10% CD-1 (product of FUJIFILM Electronic Materials Co., Ltd.). Next, the developed film was rinsed with running water for 20 sec, dried with an air knife, and heat-treated at 220° C. for 60 min, thereby forming a 96 ppi black matrix pattern (image).

[0609] Then, the following three-color curable composition was dispersed w...

Embodiment 2

[0679]

[0680] In the manufacture of the color filter of Embodiment 1, the RGB pixels are formed on a glass substrate (for manufacturing the color filter) with a retardation film (1 / 4λ retardation film: 27344K, a product of Edmont Optics, Japan), A UV-ray curable adhesive (XNR5516HV, product of Nagase-Chiba Co., Ltd.) was attached to the retardation film instead of being formed on a glass substrate for manufacturing a color filter.

[0681] A black matrix pattern was formed on the retardation film in the same manner as in Example 1, and then a photo-alignment layer and a polarizing layer were formed as follows. After that, similarly to Example 1, green, red, and blue pattern images were formed to manufacture the color filter 2 of Example 2 having a flat surface.

[0682] Then, in the same manner as in Example 1, the light-emitting display element of Example 2 was formed using the color filter 2 of Example 2 and the organic EL element of Example 1.

[0683]

[0684] [Prep...

Embodiment 3

[0710]

[0711] (1) Form a 100nm-thick patterned aluminum (Al) layer (used as a reflective light layer) pattern on a glass substrate with TFTs corresponding to R, G, B and W sub-pixels through a vacuum film.

[0712] (2) By ion plating, SiON is laminated on the reflective layer of R, G, B and W sub-pixels (i.e. 120nm in R sub-pixel, 70nm in G sub-pixel, 30nm in B sub-pixel, and 2200nm in W sub-pixel ), thereby forming an optical path length adjustment layer of a transparent insulating material.

[0713] (3) A transparent electrode (ITO, thickness: 60 nm) was formed by patterning in the optical path length adjustment layer of the sub-pixel. Each transparent electrode is electrically connected to the TFT electrode through the connection hole provided in the optical path length adjustment layer and the reflective layer.

[0714] (4) The light-emitting part is covered with a metal cover, and the non-light-emitting part is covered with an insulating layer.

[0715](5) By vacuum...

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PUM

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Abstract

A color filter for use in a light-emitting display element which emits at least white light, the color filter including a circularly polarizing layer which includes a polarizing layer, the polarizing layer having an orientation layer and a liquid crystal compound layer, wherein the circularly polarizing layer is formed only in an optical path of the white light.

Description

technical field [0001] The present invention relates to a color filter and a light emitting display element, in particular to a color filter used in a light emitting display element emitting white light and a light emitting display element including the color filter. Background technique [0002] A light-emitting display element, such as an organic EL element, displays a full-color image using, for example, a so-called RGB method. In this RGB method, white light synthesized for white display after light emitting layers corresponding to R pixels, G pixels, and B pixels emit colored light is separated from a color filter at a time. In this way, some of the light emitted from the light-emitting layer is attenuated by the color filter, which requires more power to maintain the brightness of white light. To solve this problem, PTL1 discloses a method in which a full-color image is displayed using four pixels of R, G, B, and W (white). In this method, unlike the RGB method descr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30H01L51/52H01L27/32
CPCG02B5/3083H01L27/322H01L51/0085H01L51/0087H01L51/5281H01L27/3246G02B5/201H10K59/38H10K59/122H10K85/346H10K85/342H10K59/8791G09F9/301G09G3/3208H10K59/30H10K50/86
Inventor 竹内洋介市桥光芳森嶌慎一田坂知树
Owner UDC IRELAND
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