Backlight unit and liquid crystal display device
First Claim
Patent Images
1. A backlight unit, comprising:
- a light emitting block;
a mounting substrate on which the light emitting block is mounted;
a light guide plate that receives light coming from the light emitting block, the light guide plate allowing the light to pass therethrough and guiding the light to an outside thereof;
a housing in which the light emitting block, the mounting substrate, and the light guide plate are housed, wherein the housing includes;
a bottom section that supports the light guide plate;
a wall section that rises from the bottom section; and
a protrusion section that is supported by the wall section, protrudes toward the bottom section, and extends in a direction that intersects a direction in which the wall section rises, andthe protrusion section is at least part of a first groove in which the mounting substrate is held, wherein one of the first groove is formed for one of the mounting substrates and wherein there exists, along a length of the first groove, a first narrow groove width at which the first groove is in close contact with both a mounting surface and a non-mounting surface of the mounting substrate, and a first wide groove width that is wider than the first narrow groove width.
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Accused Products
Abstract
A housing (HG) for a backlight unit (49) includes a bottom section (22), a wall section (23) and a side section (VP), and the side section (VP) is at least a part of a first groove (DH1) which sandwiches a mounting substrate (11).
12 Citations
15 Claims
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1. A backlight unit, comprising:
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a light emitting block; a mounting substrate on which the light emitting block is mounted; a light guide plate that receives light coming from the light emitting block, the light guide plate allowing the light to pass therethrough and guiding the light to an outside thereof; a housing in which the light emitting block, the mounting substrate, and the light guide plate are housed, wherein the housing includes; a bottom section that supports the light guide plate; a wall section that rises from the bottom section; and a protrusion section that is supported by the wall section, protrudes toward the bottom section, and extends in a direction that intersects a direction in which the wall section rises, and the protrusion section is at least part of a first groove in which the mounting substrate is held, wherein one of the first groove is formed for one of the mounting substrates and wherein there exists, along a length of the first groove, a first narrow groove width at which the first groove is in close contact with both a mounting surface and a non-mounting surface of the mounting substrate, and a first wide groove width that is wider than the first narrow groove width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A backlight unit, comprising:
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a light emitting block; a mounting substrate on which the light emitting block is mounted; a light guide plate that receives light coming from the light emitting block, the light guide plate allowing the light to pass therethrough and guiding the light to an outside thereof; a housing in which the light emitting block, the mounting substrate, and the light guide plate are housed, wherein the housing includes; a bottom section that supports the light guide plate; a wall section that rises from the bottom section; and a protrusion section that is supported by the wall section, protrudes toward the bottom section, and extends in a direction that intersects a direction in which the wall section rises, wherein the protrusion section, is at least part of a first groove in which the mounting substrate is held, and includes a reflection surface that reflects light, and includes a space formed to face at least three surfaces of the reflection surface, a light emission surface of the light emitting block, and a light reception surface of the light guide plate, wherein an angle formed by the light emission surface of the light emitting block and the reflection surface is an acute angle, and an angle formed by the light reception surface of the light guide plate and the reflection surface is an obtuse angle.
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Specification