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Curvilinear optical modulation component and backlight module with same

A technology of optical modulation and backlight module, applied in nonlinear optics, optics, instruments, etc., can solve problems such as high difficulty in array structure processing, unsuitable for mass production, moiré, etc.

Active Publication Date: 2008-12-17
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the actual production technology, the array structure of the prior patent is difficult to process and is not suitable for mass production; in addition, when the linear array direction of the microstructure 20 is too parallel to the liquid crystal array of the applied display, the same Very easy to produce moiré (Morie) phenomenon due to light interference

Method used

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  • Curvilinear optical modulation component and backlight module with same
  • Curvilinear optical modulation component and backlight module with same
  • Curvilinear optical modulation component and backlight module with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Figure 3A to Figure 5 It is a drawing drawn according to Embodiment 1 of the curved optical modulation element and the backlight module having the modulation element of the present invention.

[0035] see Figure 3A , which is a cross-sectional view of the structure of the curved optical modulation element of the first embodiment. The curved optical modulation element 3 shown in the figure includes a light-transmitting substrate 31 and a curved microstructure 33 . Wherein the curve may be a curve function such as a trigonometric function sin(x), cos(x) and the like.

[0036] The transparent substrate 31 has a first optical surface 311 and a second optical surface 313 opposite to each other. In the first embodiment, the light-transmitting substrate 31 may be a transparent substrate, a transparent film or other equivalent transparent elements. The second optical surface 313 can be selected as a smooth optical surface or an optical surface with a rough undulating stru...

Embodiment 2

[0047] Figure 6A to Figure 7 It is a drawing according to Embodiment 2 of the curved optical modulation element and the backlight module with the modulation element of the present invention. Wherein, the same or similar components as in Embodiment 1 are represented by the same or similar component symbols, and detailed descriptions are omitted to make the description of this case clearer and easier to understand.

[0048] The biggest difference between embodiment 2 and embodiment 1 is that, in the curved optical modulation element of embodiment 2, the extension direction of the curve of the diffusion part and the light collection part is perpendicular to the first optical surface, and the backlight module also includes A reflection sheet located under the light guide plate.

[0049] see Figure 6A Fig. 1 is a cross-sectional view of the structure of the curved optical modulation element of the second embodiment. In the curved optical modulation element 3 of Embodiment 2, t...

Embodiment 3

[0052] Figure 8 to Figure 9 It is a drawing according to Embodiment 3 of the curved optical modulation element and the backlight module with the modulation element of the present invention. Wherein, the same or similar components as those in the above-mentioned embodiments are denoted by the same or similar component symbols, and detailed descriptions are omitted.

[0053] The biggest difference between Embodiment 3 and the above embodiments is that the diffusion part and the light collecting part are arranged in equal proportions and spaced side by side, and the difference from Embodiment 2 is that the backlight module also includes a curved optical modulation element. protective film.

[0054] see Figure 8 , in the curved optical modulation element 3 of the third embodiment, the diffusing portion 331 and the light collecting portion 333 are arranged side by side at equal intervals, for example, two light collecting portions 333 are matched with two diffusing portions 331...

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Abstract

The curved optical modulation element of the present invention is composed of a light-transmitting substrate having a first optical surface and a second optical surface, and a curved microstructure arranged on the first optical surface. The composite optical effect can be modulated and diffused, so it can replace the existing technology that is divided into light collecting sheet and diffusing sheet, and its curved design can also prevent moiré phenomenon; the present invention provides both light collecting and diffusing The curved optical modulation element capable of modulating composite optical effects and the backlight module with the modulation element prevent moiré, simplify the structure of the backlight module, improve optical efficiency and reduce manufacturing costs.

Description

technical field [0001] The invention relates to an optical modulation technology, in particular to a curved optical modulation element and a backlight module with the optical modulation element. Background technique [0002] Due to the continuous advancement of technology in recent years, the new generation of digital products can not only integrate technologies from the three major fields of information, consumption and communication, but also have the characteristics of multimedia performance. Among these characteristics, image processing technology has gradually become a development area that attracts consumers' attention along with the maturity of various component technologies and increasing applications. Fueled by the sharp increase in the demand for imaging applications, there are more and more digital products integrating display functions, which relatively increases the demand for displays, and the most popular among them is the LCD screen. According to the display...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
Inventor 姚柏宏黄珩春许修真傅春能潘奕凯
Owner IND TECH RES INST
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