IP Library Granted Patent US 7,443,469
Granted Patent B2
US 7,443,469 · App. 11/061,441 · Granted Oct 28, 2008

Display device, color filter, and electronic apparatus

Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 7,443,469
App. No.
11/061,441
Granted
Oct 28, 2008
Kind
B2
Abstract

To provide a display device, a color filter, and an electronic apparatus, which can prevent the deterioration of resolution and display quality and can improve display characteristics. There is provided a display device comprising a plurality of dots in a unit pixel. The dots includes first to third dots having first to third peak wavelengths in the wavelength characteristics of emitted light, and a fourth dot having a fourth peak wavelength which is located between the first peak wavelength and the second peak wavelength, and has the fourth peak wavelength which is closer to the second peak wavelength than to the first peak wavelength, in the wavelength characteristics. The fourth dot is arranged not to be adjacent to the second dot, but is arranged to be adjacent to the first dot or the third dot.

Claims (26)

1. A liquid crystal display device comprising:

a plurality of dots in a unit pixel, the dots of the unit pixel being arranged in a line, the dots including:

first to third dots respectively having first to third peak wavelengths in the wavelength characteristics of emitted light, and

a fourth dot having a fourth peak wavelength which is located between the first peak wavelength and the second peak wavelength, the fourth peak wavelength being closer to the second peak wavelength than to the first peak wavelength, in the wavelength characteristics,

wherein the fourth dot is arranged not to be adjacent to the second dot, but is arranged to be adjacent to the first dot or the third dot.

2. The liquid crystal display device according to claim 1 ,

wherein the display color of one of the first dot and the second dot is blue and that of the other dot is green, the display color of the third dot is red, and the display color of the fourth dot is cyan.

3. The liquid crystal display device according to claim 1 ,

wherein the display color of one of the first dot and the second dot is green and that of the other dot is red, the display color of the third dot is blue, and the display color of the fourth dot is yellow.

4. The liquid crystal display device according to claim 1 ,

wherein the first to fourth dots include:

first to fourth wavelength selecting elements having first to fourth peak wavelengths, respectively, in the wavelength characteristics; and

a transmitted light amount controlling unit for controlling the amount of light transmitted through the wavelength selecting elements.

5. The liquid crystal display device according to claim 4 , further comprising an illumination unit for illuminating the wavelength selecting elements with white light.

6. The liquid crystal display device according to claim 4 , further comprising a reflecting portion for illuminating the wavelength selecting elements with reflected external light.

7. A color filter comprising:

a plurality of dots in a unit pixel, the dots of the unit pixel being arranged in a line, the dots including:

first to third dots respectively having first to third peak wavelengths in wavelength selection characteristics, and

a fourth dot having a fourth peak wavelength which is located between the first peak wavelength and the second peak wavelength, the fourth peak wavelength being closer to the second peak wavelength than to the first peak wavelength in the wavelength selection characteristics,

wherein the fourth dot is arranged not to be adjacent to the second dot, but is arranged to be adjacent to the first dot or the third dot.

8. The color filter according to claim 7 ,

wherein first to fourth dots each display a different color when white light is transmitted therethrough, and

the display color of one of the first dot and the second dot is blue and that of the other dot is green, the display color of the third dot is red, and the display color of the fourth dot is cyan.

9. The color filter according to claim 7 ,

wherein the first to fourth dots each display a different color when white light is transmitted therethrough, and

the display color of one of the first dot and the second dot is green and that of the other dot is red, the display color of the third dot is blue, and the display color of the fourth dot is yellow.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2013
From: SEIKO EPSON CORPORATION
To: INTELLECTUAL KEYSTONE TECHNOLOGY LLC
Reel/Frame 030321/0296 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 22, 2005
From: MAEDA, TSUYOSHI; MORIYA, HIDEKUNI
To: SEIKO EPSON CORPORATION
Reel/Frame 016313/0247 →
Priority Claims (1)
JP 2004-129655 · Apr 26, 2004 · national
Continuity (1)
Related Publication 20050236950A1 · Oct 27, 2005