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Liquid crystal display device and electronic apparatus

A technology of a liquid crystal display device and a liquid crystal layer, applied in identification devices, static indicators, optics, etc., can solve problems such as improvement of display quality, inability to achieve bright colors, dark colors, etc., and achieve the effect of improving image quality

Inactive Publication Date: 2008-07-23
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the technology described in the above-mentioned patent documents, although display colors in a wider range of wavelength regions can be realized, the inventors found that the colors of C, Y, and M in this technology are dark, and bright colors cannot be realized.
That is, by using the above technology, although the expressiveness of the color is improved, the display quality cannot be said to be improved.

Method used

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  • Liquid crystal display device and electronic apparatus
  • Liquid crystal display device and electronic apparatus
  • Liquid crystal display device and electronic apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0048] Below, refer to Figure 1 to Figure 6 A first embodiment of the present invention will be described.

[0049] In this embodiment mode, an active matrix transmissive liquid crystal display device using a thin film transistor (Thin Film Transistor, hereinafter abbreviated as TFT) as a switching element will be described as an example.

[0050] figure 1 It is a plan view of each constituent element of the liquid crystal display device of this embodiment seen from the counter substrate side, figure 2 is a perspective view illustrating a cross-sectional structure of a liquid crystal display device, image 3 is a planar configuration diagram of a color filter of a liquid crystal display device, Figure 4 is a graph showing the wavelength selection characteristics of the color filter, Figure 5 is a graph showing the spectral characteristics of the transmitted light of the liquid crystal layer, Figure 6 It is a figure for demonstrating the xy chromaticity characteristic...

no. 2 approach

[0083] Below, refer to Figure 7 A second embodiment of the present invention will be described.

[0084] In this embodiment, the same reference numerals are assigned to the same configurations as those of the first embodiment, and descriptions thereof will be omitted, and only portions different from those of the first embodiment will be described.

[0085] In this embodiment, as in the above-mentioned first embodiment, the peak of the wavelength selection characteristic at point C corresponds to the peak of the transmitted light spectrum characteristic of the liquid crystal layer 11, and at the same time, the peak of the illumination light of the backlight unit 13 is adopted. Spectrum characteristics include the structure of the peak wavelength of the point C.

[0086] Figure 7 It is a graph showing the spectral characteristics of the illumination light emitted by the backlight unit 13 .

[0087] The backlight unit 13 of the present embodiment constitutes a white backlig...

no. 3 approach

[0091] Next, a third embodiment of the present invention will be described.

[0092] The same reference numerals are assigned to the same structures as those in the first and second embodiments, and descriptions thereof will be omitted.

[0093] In the above-mentioned first and second embodiments, the transmissive liquid crystal display device has been described. However, in the present embodiment, the wavelength selection of the point C is performed as described above in the reflective liquid crystal display device. The case where the peak of the characteristic corresponds to the peak of the spectral characteristic of the transmitted light of the liquid crystal layer 11 will be described.

[0094] In this case, the liquid crystal display device 1 has a configuration including a reflector that reflects external light and irradiates the reflected light to each point of RGBC. When a specific example of the reflective portion is described, instead of the backlight unit 13 , a me...

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Abstract

Provided is a liquid crystal display device having a high display quality and an excellent display characteristic and an electronic apparatus using the same. A liquid crystal display device includes color filter portions each having a plurality of colored layers in a unit pixel and a liquid crystal layer for controlling the amount of light passing through the color filter portions. The color filter portion has in the unit pixel first to third colored layers respectively having first and third peak wavelengths in a wavelength selection characteristic and a fourth colored layer having a peak wavelength between the first peak wavelength and the second peak wavelength, and a peak wavelength of a spectral characteristic of light passing through the liquid crystal layer corresponds to the fourth peak wavelength.

Description

technical field [0001] The present invention relates to a liquid crystal display device and electronic equipment. Background technique [0002] Conventionally, liquid crystal display devices are configured to have three color dots of R (red) / G (green) / B (blue) in a unit pixel, and by varying the light intensity of these three color dots, a variety of colors can be realized. color for image display. [0003] However, in nature, there are wavelength regions of colors that cannot be displayed only with the three colors of R / G / B, and it is difficult to realize colors close to natural light. [0004] Therefore, in recent years, liquid crystal display devices capable of realizing colors closer to natural light have been proposed (for example, see Patent Document 1). In this document, a pixel structure having three color points of R / G / B and further having C (cyan) is adopted. Since this C is a color defined outside the triangular region formed by connecting the points of R / G / B o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/136G02F1/1335G02F1/133G09F9/35G02F1/13357G09F9/30
CPCG02F1/133514G02F2201/52G02F1/1335
Inventor 前田强千野英治名知郁高
Owner SEIKO EPSON CORP