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Multiprimary color display

A display, primary color technology, used in static indicators, image/graphic display tubes, cathode ray tube indicators, etc.

Active Publication Date: 2007-11-21
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, it is difficult to increase luminous efficiency by simultaneous spectroscopy of two green colors while satisfying the requirements of brightness and color reproducibility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0092] The FED is manufactured from phosphors of four primary colors including yellow in addition to R, G, and B.

[0093] In this example, as the phosphor material, Y 2 o 2 S: Eu for red, CaAl 2 S 4 :Eu for green, ZnS:Ag, Cl for blue, CaGa 2 S 4 :Eu is used for yellow.

[0094] Here, the areas of the emission ranges of the respective colors are set to be the same.

example 2

[0109] This four-primary-color FED was fabricated in the same manner as in Example 1.

[0110] In Example 1, the area of ​​each pixel element is set to be the same. But in Example 2, the red emission range is set to 0.9 times the red range in Example 1, the green emission range is set to 0.9 times the green range in Example 1, and the blue emission range is set to 1.3 times the blue range in Example 1 , the yellow light emission range is set to 0.9 times the yellow range in example 1. FEDs were manufactured under such conditions.

[0111] The display color range of the FED thus fabricated was 124% of the color reproduction range displayed based on the NTSC signal. In addition, compared with that in Example 1, the emission luminance was increased by 46%.

example 3

[0113] This four-primary-color FED was fabricated in the same manner as in Example 1.

[0114]But in Example 3, the red emission range is set to 1.1 times the red range in Example 1, the green emission range is set to 0.9 times the green range in Example 1, and the blue emission range is set to 1.28 times the blue range in Example 1 , the yellow light emission range is set to 0.72 times the yellow range in Example 1. A display unit of one pixel was manufactured under this condition. Incidentally, the design of each luminous range is obtained by converting the value calculated by adjusting the luminance of each color to satisfy the CIE chromaticity coordinates of the designed white when the same power is supplied.

[0115] The display color range of the FED thus fabricated was 124% of the color reproduction range displayed based on the NTSC signal. In addition, the emission luminance was increased by 59% compared with that in Example 1 manufactured as a comparison.

[0116] ...

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Abstract

A display displays a color image by using a light source of at least four or more primary colors, and at least one color of the light source is yellow. Thus, it is possible to provide a flat panel display that can acquire a wider color reproduction range without sacrificing luminance.

Description

technical field [0001] The present invention relates to multi-primary displays. Background technique [0002] In recent years, conventional types of image displays (hereinafter simply referred to as "displays") have been replaced by flat panel displays in fields ranging from personal computers to home television receivers. [0003] Specifically, the flattening of displays first started from the field of personal computers in which conventional types of displays were replaced by liquid crystal displays. [0004] However, although the performance of liquid crystal displays has been improved, there are still some problems in viewing angle, color reproducibility (including color reproducibility in a direction oblique to the screen), black display, and response speed. In a plasma display, it is difficult to make a pixel small because a space for generating plasma is required. More specifically, since the color gradation is controlled using pulses of plasma, it is difficult to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/02G09G5/00G02F1/13357G09F9/30H01J11/22H01J11/34H01J11/42H01J29/32H01J31/12
CPCH01J31/127C09K11/584H01J11/10C09K11/7787H01J9/2278H01J11/42C09K11/7731H05B33/02
Inventor 笹栗大助
Owner CANON KK
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