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Illumination device, display device, and television receiver

A technology for lighting devices and display devices, which is applied to lighting devices, lighting device parts, lighting and heating equipment, etc., can solve problems such as uneven brightness, and achieve adjustable display brightness, excellent visual recognition, and low cost. Effect

Inactive Publication Date: 2012-05-09
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, the backlight device requires approximately uniform illumination brightness distribution, but human eyes usually pay attention to the center of the screen of a liquid crystal display device, so it is known to make the center of the screen bright and the edges of the screen darker to make the visual luminance different. Neither is conspicuously conspicuous (Patent Document 1 below)

Method used

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  • Illumination device, display device, and television receiver
  • Illumination device, display device, and television receiver
  • Illumination device, display device, and television receiver

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Embodiment approach

[0078] The embodiment of the present invention was shown above, but the present invention is not limited to the embodiment described with the above description and drawings, and for example, the following embodiments are also included in the technical scope of the present invention.

[0079] (1) In the above-mentioned embodiment, the narrow-pitch portion is formed at the center of the arrangement of the LED substrates, and the wide-pitch portion is formed at the end of the arrangement of the LED substrates. However, the formation positions of the narrow-pitch portion and the wide-pitch portion are arbitrary.

[0080] However, when the backlight device of the present invention is used in, for example, a display device, relatively high brightness is required in the center of the screen of the display device, so it is preferable that the narrow-pitch portion is located inside the wide-pitch portion with respect to the direction in which the LED substrates are arranged. .

[0081]...

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PUM

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Abstract

Provided is a low-cost illumination device in which the illumination brightness can be partially adjusted. An illumination device (12) is provided with a plurality of light source mounting substrates (20) and a plurality of point light sources (17) mounted on the light source mounting substrates (20). The light source mounting substrates (20) are arranged in parallel rows. The arrangement comprises narrow spacing portions (20a) where the arrangement has a relatively narrow spacing and wide spacing portions (20b) where the arrangement has a relatively wide spacing.

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 does not emit light by itself, so a backlight device is separately required as an illumination device. It is known that the backlight unit is provided on the back side (the side opposite to the display surface) of the liquid crystal panel, and includes a plurality of light sources (for example, LEDs). [0003] However, the backlight device requires approximately uniform illumination brightness distribution, but human eyes usually pay attention to the center of the screen of a liquid crystal display device, so it is known to make the center of the screen bright and the edges of the screen darker to make the visual luminance different. Both are hardly conspicuous configurations (hereinafter referred to as P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V3/00F21V19/00F21Y101/02
CPCG02F1/133603G02F1/1336G02F1/133608
Inventor 横田匡史
Owner SHARP KK
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