Backlight unit and liquid-crystal display device
A technology of backlight source and liquid crystal panel, applied in the direction of light source, electric light source, optical element, etc., can solve the problems of reduced brightness and uneven brightness, and achieve the effect of reducing power, suppressing thermal stress, and improving utilization rate
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no. 1 Embodiment approach
[0041] figure 1 It is an exploded perspective view of an example of the backlight unit according to the present invention. In addition, in figure 1 In the shown backlight unit, the upper side of the paper is referred to as the front, and the lower side is referred to as the rear. In addition, in the following description, unless otherwise specified, the figure 1 The state is used as a reference to express the front or back.
[0042] Such as figure 1 As shown, the backlight unit 1 is an illuminating device that backlights a liquid crystal display device and emits planar light. The backlight unit 1 includes: a rear chassis 10 , a reflection sheet 11 , a light guide plate 2 , a light source unit 3 , an optical sheet 4 , and a light guide plate positioning unit 5 .
[0043] The rear chassis 10 is a rectangular member when viewed from the front, and includes a rectangular bottom portion 100 . Such as figure 1As shown, in the backlight unit 1 , a reflective sheet 11 , a ...
no. 2 Embodiment approach
[0064] Another example of the backlight unit according to the present invention will be described with reference to the drawings. Figure 4 is a front view of another example of the backlight unit according to the present invention, Figure 5 will be Figure 4 An enlarged view of the vicinity of the light guide plate positioning part of the shown backlight unit, Figure 6 will be Figure 5 The shown backlight unit is a cross-sectional view taken along line VI-VI. Such as Figure 4 , Figure 5 As shown, the backlight unit 1B has the same configuration as the backlight unit 1 shown in the first embodiment except for the light guide plate pressing portion 6 and the optical sheet 4b that press the end of the light guide plate 2 in the longitudinal direction. , attach the same reference numerals to substantially the same parts.
[0065] The backlight unit 1B according to the present invention includes a light guide plate pressing portion 6 that presses the pressed portions 24...
no. 3 Embodiment approach
[0074] A liquid crystal display device using the backlight unit according to the present invention will be described with reference to the drawings. Figure 7 is an exploded perspective view of a liquid crystal display device according to the present invention, Figure 8 It is the rear view of the state which removed the back chassis of the liquid crystal display device concerning this invention, Figure 9 It is an enlarged view of the light guide plate positioning part of the liquid crystal display device according to the present invention, Figure 10 yes Figure 9 A cross-sectional view of the shown liquid crystal display device cut along line XX.
[0075] Such as Figure 7 As shown, the liquid crystal display device A includes a backlight unit 1B, a liquid crystal panel unit 7 , and an exterior frame 8 . Figure 7 The shown liquid crystal display device A essentially adopts Figure 4 The shown backlight unit 1B is partly corresponding to the liquid crystal display devi...
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