Light guide plate for backlight module
A backlight module and light guide plate technology, which is applied in the field of light guide plates, can solve the problems of darkened display hotspots, thicker backlight module thickness, large straightness, etc., and achieve the effect of improving light uniformity
Inactive Publication Date: 2014-06-11
NANJING GAOYIZHI OPTICAL TECH
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Problems solved by technology
[0007] As mentioned above, in the existing liquid crystal display device, the optical sheet is usually composed of a diffusion sheet and two prism sheets, so there is a problem that the thickness of the backlight module becomes thicker.
[0008] In addition, LEDs are often used as light sources. However, the straightness of light from LEDs is large, and when proper reflection cannot be achieved on the light guide plate, hot spots (hot- spot) phenomenon, so research to prevent such hot spots from occurring is required
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[0030] The present invention can be changed in various ways, and can have various embodiments. The specific embodiments shown in the drawings will be described in detail below. However, it should be understood that the present invention is not limited to specific embodiments, but includes all changes, equivalents and even replacements within the scope of the idea and technology of the present invention. In describing the present invention, when it is judged that the detailed description of the related known art will make the gist of the present invention unclear, the detailed description will be omitted.
[0031] The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Expressions in the singular include expressions in the plural unless the context clearly indicates a different meaning. In the present application, terms such as "comprising" or "having" should be understood as specifying the ...
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The invention discloses a light guide plate for a side-light type backlight module; the light guide plate for the side-light type backlight module comprises a plurality of V-shaped intaglio grooves which are formed on the first surface of the light guide plate and extend along the length direction in parallel with the direction of light incoming from the side of the light guide plate; the intaglio grooves have depths of 1-30 microns, intervals (P) of 10-150 microns, widths of 3-100 microns and inner angles (theta) of 50-150 degrees; thereby, hotspots generating in the light incoming area can be inhibited and meanwhile the light uniformity can be improved without additional diffusers or reflector plates and the like; and a pattern can be formed while the light guide plate is emitting, so that the light guide plate is economical.
Description
technical field [0001] The present invention relates to a light guide plate used in a backlight module, and more particularly, to a pattern structure of a light-emitting surface of a light guide plate used to prevent hot-spots caused by light sources. Background technique [0002] Recently, with the development of the information society, the requirements for display devices have also become diversified, and liquid crystal display devices (LCD: Liquid Crystal Display) that can meet the conditions of light weight, thin thickness, low power consumption, and high resolution have been used. As a typical flat-panel display device. [0003] A liquid crystal display device is a display device that applies an electric field to a liquid crystal material having anisotropic dielectric constant injected between two substrates, and adjusts the intensity of the electric field to adjust the amount of light transmitted through the substrates to obtain a desired image signal. [0004] A liq...
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IPC IPC(8): F21V8/00
Inventor 赵宰亨
Owner NANJING GAOYIZHI OPTICAL TECH