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Information display
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
一种信息显示装置、光源的技术，应用在显示装置、辨认装置、照明装置等方向，能够解决无法使用等问题
Inactive Publication Date: 2010-03-24
PANASONIC CORP
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[0009] In addition, the information display device described in Patent Document 4, in addition to displaying images using external light, can also be used as an ordinary window, and can also perform dimming of external light, but there is a problem that it cannot be used without external light.
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Embodiment 1
[0034] figure 1 with figure 2 Is a diagram showing the general structure of the information display device according to the first embodiment of the present invention, figure 1 Is a perspective view illustrating the overall structure of the information display device according to Embodiment 1 of the present invention, figure 2 Yes figure 1 A cross-sectional view of the main part of the information display device shown in the xz plane.
[0035] Such as figure 1 with figure 2 As shown, the information display device 10 according to this embodiment includes: a plurality of LED light sources 11 arranged such that their light-emitting parts are arranged in a straight line, and the illumination light 12 emitted from the plurality of LED light sources 11 is incident from the side surface 13a and from there. The light guide plate 13 emitted from the main surface 13b, a prism sheet 14 and a diffusing sheet 15, a liquid crystal panel 16, and a pair of prism sheets that adjust the exit angl...
Embodiment 2
[0051] image 3 with Figure 4 Is a diagram showing a schematic configuration of an information display device according to Embodiment 2 of the present invention, image 3 Is a perspective view illustrating the overall structure of an information display device related to Embodiment 2 of the present invention, Figure 4 Yes image 3 A cross-sectional view of the main part of the information display device shown in the xz plane.
[0052] in image 3 with Figure 4 In the information display device 20 and figure 1 with figure 2 Compared with the information display device 10 shown, the difference lies in: the electro-optical prism 24 and the dimming liquid crystal 25 are used instead of the prism sheet 14 and the diffusion sheet 15, and the transparent liquid crystal panel 26 is used instead of the liquid crystal panel 16. The constituent elements are the same.
[0053] Here, the electro-optical prism 24 can switch the functions of the transparent sheet and the prism sheet through th...
Embodiment 3
[0094] Figure 13 It is a cross-sectional view showing a schematic configuration of an information display device according to Embodiment 3 of the present invention. In each of the above-mentioned embodiments, a liquid crystal panel is used as a display panel, and the information display device 110 of this embodiment is constructed by combining a transparent inorganic EL panel 111, a dimming mirror 19, and a dimming liquid crystal 25. The transparent inorganic EL panel 111 is formed by sandwiching the light-emitting layer 111c and the insulating layer 111d with a pair of transparent electrodes 111b and 111e, and further sandwiching the cover layer 111a and the glass substrate 111f on both sides thereof.
[0095] With such a configuration, for example, when the dimming mirror 19 is made transparent and the external light 18a is used, by partially controlling the dimming liquid crystal 25, a white (smoky) display can be performed on a transparent background. As a result, informatio...
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Abstract
Disclosed is an information display (10) comprising a light source (11), a light guide panel (13) that takes in light from the light source (11) on a side surface and emits the light from one of the principal surfaces, and a liquid crystal panel (16) that is disposed adjacent to the light guide panel (13). External light enters from the side opposite to one of the principal surfaces of the light guide panel (13) that comprises an adjusting mirror (19) that can electrically switch permeation and reflection of light, and the light from the light source (11) and / or an external light is emitted from one of the principal surfaces of the light guide panel (13) and passes through the liquid crystal panel (16), thereby displaying letters or images on the information display (10).
Description
Technical field [0001] The present invention relates to a thin information display device that can utilize backlight. Background technique [0002] In recent years, the increase in size and thickness of information display devices has been promoted, and their applications have expanded from small portable electronic devices to large digital signage displays such as electronic blackboards and electronic advertisements. These information display devices are required to reduce power consumption in total. In addition to improving the light utilization efficiency of the devices, various efforts are being made to utilize external light such as sunlight. [0003] As such an information display device, there is proposed a liquid crystaldisplay device that displays images through backlight when the surroundings are dark, and when the external light is sufficiently bright, the front light from the viewing side is taken as external light for illumination (see, for example, Japanese Patent A...
Claims
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Application Information
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