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Illuminating device, and liquid crystal display device and image display device using same

一种液晶显示装置、光照射装置的技术，应用在图像通信、光波导的耦合、光学等方向，能够解决观察不到3D图象、谈不上方便易用、不能头的位置大幅度移动等问题

Inactive Publication Date: 2012-10-03
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, according to the above-mentioned conventional naked-eye 3D liquid crystal display device, in order to observe 3D images, it is necessary to fix the position of both eyes of the observer at a predetermined position.
When the observer's eyes deviate from the specified position, the light from the light guide plate cannot be gathered to the observer's two eyes, and the observer cannot observe the 3D image.
Therefore, for example, there is a limitation in flat-panel 3D liquid crystal display devices, that is, the viewer cannot move the position of the head to a large extent relative to the 3D liquid crystal display device, so it cannot be said to be convenient and easy to use.
In addition, the viewer may not notice that the position of his eyes deviates from the specified position, so the image may not be observed correctly.

Method used

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  • Illuminating device, and liquid crystal display device and image display device using same
  • Illuminating device, and liquid crystal display device and image display device using same
  • Illuminating device, and liquid crystal display device and image display device using same

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0064] Figure 1A as well as Figure 1B It is a cross-sectional view showing the structure of the liquid crystal display device according to Embodiment 1 of the present invention. figure 2 It is a perspective view showing the appearance of the liquid crystal display device according to Embodiment 1 of the present invention. In this embodiment, the liquid crystal display device 100 is constituted by a flat-panel and naked-eye 3D liquid crystal display device. Such as figure 2As shown, the liquid crystal display device 100 has a rectangular frame 1 . A light irradiation device 2 , a liquid crystal panel 3 , a right camera 4 a , a left camera 4 b , and a control unit 5 are mounted on the frame 1 .

[0065] The light irradiation device 2 has a planar illuminating body 6 and a light deflector 7 disposed on the light emitting side of the planar illuminating body 6 .

[0066] The planar illuminating body 6 has a light guide plate 8 , a light source 9 a provided opposite to one ...

Embodiment approach 2

[0093] Below, refer to Figure 5A ~ Figure 5C , Figure 6A ~ Figure 6C as well as Figure 7 , the light irradiation device according to Embodiment 2 of the present invention will be described. Figure 5A ~ Figure 5C as well as Figure 6A ~ Figure 6C It is a cross-sectional view showing the structure of the light irradiation device according to Embodiment 2 of the present invention.

[0094] The light irradiation device 2A of the present embodiment includes a planar illuminating body 6A and a light deflector 7 provided on the light emitting side of the planar illuminating body 6A. The planar illuminating body 6A has a light source 20 , a light guide plate 21 , a reflection sheet 22 , a polarization modulation plate 23 , a polarization filter 24 , and a prism sheet 25 .

[0095] Figure 7 yes means Figure 5A Oblique view of the structure of the light source. Such as Figure 7 As shown, the light source 20 has a light source portion 26 and a light guide rod 27 . The lig...

Embodiment approach 3

[0120] Figure 8A as well as Figure 8B It is a diagram showing the configuration of a liquid crystal display device according to Embodiment 3 of the present invention. A liquid crystal display device 100B shown in the figure includes a light irradiation device 2B, a liquid crystal panel 3, a right camera 4a, a left camera 4b, and a control unit 5B.

[0121] The light irradiation device 2B has a planar illuminating body 6B, a light deflector 7 , and a Fresnel lens 29 . The planar illuminating body 6B has a light source 30 and a light guide plate 21 . The light guide plate 21 has the same structure as the light guide plate 21 of Embodiment 2 above. The light source 30 is disposed opposite to one side surface 21 a of the light guide plate 21 .

[0122] The light deflector 7 is provided facing the main surface 21 c of the light guide plate 21 . This light deflector 7 has the same structure as the light deflector 7 of Embodiment 1 described above.

[0123] The Fresnel lens 2...

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Abstract

The present invention pertains to an illuminating device (2) used in a liquid crystal display device (100) that alternately focuses light on a right eye (17a) position and a left eye (17b) position of a viewer (16). The illuminating device (2) is provided with a planar illuminating body (6) that focuses emitted light on prescribed focal points, and a light deflector (7) that two-dimensionally deflects light from the planar illuminating body (6). By switching the direction of the light that is emitted, the planar illuminating body (6) can alternately switch between a first light-focusing state in which the prescribed focal point is positioned at the right eye (17a) of the viewer (16), and a second light-focusing state in which the prescribed focal point is positioned on the left eye (17b) of the viewer (16). The light deflector (7) is able to track the motion of the viewer (16), and adjust the prescribed focal point in the first light-focusing state and the prescribed focal point in the second light-focusing state.

Description

technical field [0001] The present invention relates to, for example, a light irradiation device that can be used as a 3D liquid crystal display device and a security display, and a liquid crystal display device and an image display device using the light irradiation device. Background technique [0002] As one type of image display device, there is a liquid crystal display device. A liquid crystal display device includes a liquid crystal panel as a spatial modulation element, and a light irradiation device (backlight) that irradiates light toward the back surface of the liquid crystal panel. The light transmitted through the liquid crystal panel is spatially modulated to form an image on the liquid crystal panel. [0003] In order to further enhance the sense of presence of images displayed on liquid crystal display devices, the development of 3D liquid crystal display devices capable of displaying 3D (Three Dimensions: three-dimensional) images is being promoted. This 3D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1335G02F1/13357G02B30/33
CPCG02F1/13G02B6/27G02F1/1335G02B6/0011G02B6/0038G02B6/0056H04N2213/001H04N13/32H04N13/376G02B30/33
Inventor 式井慎一林克彦吉川智延
Owner PANASONIC INTPROP MANAGEMENT CO LTD