Illuminating apparatus, display apparatus and television receiving apparatus

A technology for lighting devices and display devices, which is applied to lighting devices, components of lighting devices, lighting and heating equipment, etc., and can solve problems such as the decrease in illumination brightness of backlight devices, uneven brightness, and display quality degradation of liquid crystal display devices, etc. Problems, to achieve uniform lighting brightness distribution, suppress display unevenness, excellent effect of display unevenness

Inactive Publication Date: 2011-01-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase in the number of spacers installed in this way will lead to a decrease in the brightness of the illumination light of the backlight device or uneven brightness, which may lead to a decrease in the display quality of the liquid crystal display device.

Method used

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  • Illuminating apparatus, display apparatus and television receiving apparatus
  • Illuminating apparatus, display apparatus and television receiving apparatus
  • Illuminating apparatus, display apparatus and television receiving apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0064] according to Figure 1 to Figure 9 Embodiment 1 of the present invention will be described. First, use Figure 1 to Figure 6 The configuration of a television receiver TV having a liquid crystal display device 10 will be described.

[0065] figure 1 It is an exploded perspective view showing a schematic configuration of a television receiver according to this embodiment, figure 2 yes means figure 1 An exploded perspective view of the schematic structure of the liquid crystal display device included in the television receiving device of image 3 yes means figure 2 A cross-sectional view of the cross-sectional structure of the liquid crystal display device along the short-side direction, Figure 4 yes means figure 2 A cross-sectional view of the cross-sectional structure of the liquid crystal display device along the long-side direction, Figure 5 yes means figure 2 A cross-sectional view of the structure of the lamp clip possessed by the liquid crystal displ...

Embodiment approach 2

[0116] Next, use Figure 10 and Figure 11 Embodiment 2 of the present invention will be described. In this second embodiment, the structure in which the shape of the spacer is changed is shown, and the rest is the same as the above-mentioned embodiment. The same reference numerals are assigned to the same parts as those in the above-mentioned embodiment, and repeated explanations will be omitted.

[0117] Such as Figure 10 As shown, the spacer 40B has a structure in which a plurality of substantially semi-cylindrical spacers 41B are arranged side by side on the substrate piece 42B. The end portion of the spacer 41B facing the cold cathode tube 17 is a strip line 43B, and has circumferential surfaces 44B and 45B that are convexly curved from the strip line 43B toward the substrate piece 42B. The spacers 41B are arranged so that the strip lines 43B coincide with the short side direction of the substrate piece 42B (spacer piece 40B).

[0118] The spacer sheet 40B is attach...

Embodiment approach 3

[0120] Next, use Figure 12 and Figure 13 Embodiment 3 of the present invention will be described. In this third embodiment, a structure in which the shape of the spacer is changed is shown, and the rest are the same as the above-mentioned embodiment. The same reference numerals are assigned to the same parts as those in the above-mentioned embodiment, and repeated explanations will be omitted.

[0121] Such as Figure 12 As shown, the spacer 40C adopts a structure in which a plurality of substantially corrugated spacers 41C having arc-shaped recesses on the end surface opposite to the cold cathode tube 17 are arranged on the substrate piece 42C. The end surface of the spacer 41C opposite to the cold cathode tube 17 is recessed in an arc shape to form a concave portion 43C, and has curved surfaces 44C, 45C that are concavely curved from the concave portion 43C to the substrate sheet 42C to form a widened bottom. In addition, the curvature formed by the arc of the grooved ...

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PUM

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Abstract

An illuminating apparatus (12) is provided with a linear light source (17), a chassis (14) for storing the linear light source (17), and a spacer (41), which is disposed between the linear light source (17) and the chassis (14) for regulating proximity between the linear light source and the chassis. The spacer (41) is disposed on the chassis (14), at a position which overlaps with the linear light source (17) in plane view. Since the spacer (41) is provided between the linear light source (17) and the chassis (14) to control a distance between the linear light source and the chassis not to be a prescribed value or less, the spacer does not cover the linear light source (17) and does not easily form a dark area on the linear light source (17). Thus, uniformity of luminance distribution isensured.

Description

technical field [0001] The present invention relates to an illuminating device, a display device and a television receiving device. Background technique [0002] For example, a liquid crystal panel used in a liquid crystal display device such as a liquid crystal television is non-self-illuminating, so it is necessary to separately install a backlight device as an illuminating device. The backlight device is arranged on the back side of the liquid crystal panel (opposite side of the display surface), and includes, for example, a base made of metal with an opening on the side of the liquid crystal panel and a plurality of linear light sources (such as cold cathode tubes) accommodated in the base. ). [0003] When the linear light source is turned on, there is little leakage to the base, and the amount of leakage is inversely proportional to the distance between the linear light source and the base. Therefore, if the linear light source is bent due to its own weight or a part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V19/00F21S2/00G02F1/1333G02F1/13357F21Y103/00
CPCG02F1/133604G02F1/133611G02F1/133608
Inventor 山本香织
Owner SHARP KK
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