Liquid crystal display device and back-light device
A technology for liquid crystal display devices and backlighting, which is applied to lighting devices, lighting and heating equipment, optics, etc., can solve problems such as insufficient prevention of optical sheets from wrinkling.
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Embodiment approach 2
[0094] In this embodiment, it is characterized in that: the reflective polarizer is used for the first optical sheet, the prism sheet or the textured sheet is used for the second optical sheet, and the second optical sheet 7 is placed opposite to the adjacent reflective polarizer. 6. It is arranged on the side of the liquid crystal panel 8. The reason is to reduce the color spots on the screen caused by the contact between the reflective polarizer 6 and the liquid crystal panel 8 . That is, for example, when the diffusion plate 5 bends toward the liquid crystal panel due to certain factors, and the reflective polarizer 6 directly contacts the liquid crystal panel 8 locally, a color difference of the display screen occurs between the partially contacted part and the non-contact part, resulting in color spots. This is because the polarizing plate built into the glass surface of the liquid crystal panel 8 changes its orientation state due to heat generation. That is, the reflect...
Embodiment approach 3
[0099] As in Embodiment 2, when a prism sheet or anilox sheet is used for the second optical sheet, light interference fringes (i.e. Moiré stripes). Therefore, the present embodiment has the following composition.
[0100] Figure 4 It is a figure which shows the relationship of the 2nd optical sheet of this Example, and the liquid crystal panel 8.
[0101] Such as Figure 4 As shown, the pixels constituting the liquid crystal panel are generally arranged in rows and columns as shown in symbol 8a (forming a two-dimensional pattern in the vertical direction and the horizontal direction) (respectively Figure 4 direction of symbols 8a-1 and 8a-2). In contrast, as Figure 7 As shown in the symbol 7a of , the arrangement direction of the ribs and the texture is configured to have a certain rotation angle with the normal direction of the screen as the axis, and does not coincide with the vertical direction and the horizontal direction ( Figure 4 symbol 7a-1). By allocating ...
Embodiment approach 4
[0104] Figure 5 It is a diagram showing a configuration example of a backlight device according to an embodiment. Such as Figure 5 As shown, the liquid crystal display device has a light source 1 , a casing 2 , a reflector 3 , a light guide plate 4 , a reflective polarizer 6 , and a prism sheet 7 . A liquid crystal panel 8 is provided in this backlight to constitute a liquid crystal display device. and figure 1 The difference is that the light guide plate 4 is used to reduce the number of light sources 1 .
[0105] The liquid crystal display device of the present embodiment is configured to arrange, for example, one light source 1 on each of the two end surfaces of the backlight device, a light guide plate 4 for making the light from the light source 1 uniform, and one surface (back surface) of the light guide plate 4. The planar reflector 3 that reflects light to the side of the light guide plate 4, the case 2 that accommodates these components, and the selective refle...
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Abstract
Description
Claims
Application Information
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