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Display apparatus

A technology for display devices and color filters, applied in static indicators, instruments, diodes, etc., can solve the problem that the shape of the color filter is not specially mentioned, and achieve the effect of suppressing color shift

Inactive Publication Date: 2013-07-24
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the technique disclosed in Japanese Patent Application Laid-Open No. 2006-73219, there is no special mention about the shape of the color filter

Method used

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no. 1 example ）

[0026] figure 1 is a schematic sectional view showing the display device according to the first embodiment of the present invention. figure 1 The display device 1 includes a substrate 20, and adjacent two types of pixels disposed on the substrate 20, that is, a first pixel 10a and a second pixel 10b. In addition, two types of pixels ( 10 a and 10 b ) are in close contact with each other and arranged alternately. Note that when viewing the display device from the flat side, including figure 1 The two types of pixels (10a and 10b) within the display device 1 are arranged in a matrix (not shown). also, figure 1The display device 1 is a top emission type display device in which light is extracted from the upper surface side (side opposite to the substrate 20 ) of the organic light emitting elements ( 11 a and 11 b ) formed on the substrate 20 .

[0027] exist figure 1 In the display device 1, the first pixel 10a includes an organic light emitting element (first organic l...

no. 2 example ）

[0056] The above-described embodiment (first embodiment) is a system in which the number of color filter types is two, but in the present invention the number of color filter types is not limited to two, and even when the number is three or more The present invention can also be easily applied in various cases. Furthermore, materials, thicknesses, etc. that are not particularly specified in the second embodiment of the present invention are equivalent to those in the first embodiment.

[0057] figure 2 is a schematic sectional view showing a display device according to a second embodiment of the present invention. figure 2 The display device 2 includes three types of pixels on a substrate 40, that is, a first pixel 30a, a second pixel 30b, and a third pixel 30c. The first pixel 30 a includes an organic light emitting element (first organic light emitting element 31 a ) and a first color filter 32 a. The second pixel 30b includes an organic light emitting element (second o...

example 1）

[0072] Manufactured by figure 1 The display device 1 shown in . Note that the pitch of each pixel included in the display device manufactured in this example was set to 12 μm×6 μm.

[0073] (1) Step of manufacturing the substrate provided with the first electrode

[0074]A pixel circuit (not shown) including TFTs was formed on a silicon substrate, and then an interlayer insulating film made of SiO was formed on the pixel circuit, thereby manufacturing the substrate 20 . Next, a Ti film was formed on the substrate 20 by sputtering. At this time, the thickness of the Ti film was set to 50 nm. Next, the Ti film was patterned for each pixel to form an anode electrode (first electrode 21 ). At this time, the size of the exposed portion of the first electrode 21 was set to 9 μm×4 μm. In this case, the distance between the first electrodes 21 was 2 μm. Next, the substrate 20 on which the first electrode 21 was formed was subjected to ultrasonic cleaning with isopropyl alcohol ...

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Abstract

Provided is a display apparatus including: a substrate; a first organic light emitting element; a second organic light emitting element; a first color filter; and a second color filter in which the first color filter has a refractive index larger than a refractive index of the second color filter; the first color filter and the second color filter are in contact with each other; and in a cross section taken along a direction perpendicular to the substrate, at a part at which the first color filter and the second color filter are in contact with each other, the first color filter has an angle between a side surface thereof and the substrate, which is more than 90 degrees, and the second color filter has an angle between a side surface thereof and the substrate, which is less than 90 degrees.

Description

technical field [0001] The present invention relates to a display device, and more particularly, to a display device including an organic light emitting element (organic electroluminescence (EL) element) and a color filter. Background technique [0002] In recent years, organic light-emitting display devices (organic EL display devices) using various types of organic light-emitting elements having different emission colors have attracted attention as display devices replacing CRTs and LCDs used as conventional display devices. An organic light emitting element forming an organic EL display device is an electronic element including a plurality of organic compound layers including a light emitting layer arranged between an anode and a cathode. Organic light emitting elements are self-luminous devices, and thus display devices including organic light emitting elements exhibit excellent performance in contrast and color reproducibility. [0003] Incidentally, there is an organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52
CPCG09G3/3208H01L27/322H10K59/38
Inventor 富田泰治一之濑雄志
Owner CANON KK
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