Method for manufacturing light guide plate
A manufacturing method and technology of light guide plates, which are applied in the direction of light guides, optics, optical components, etc., can solve problems such as thinning light guide plates, low life, and inability to meet large-size applications, and achieve the effect of avoiding low light output efficiency
Active Publication Date: 2013-01-23
CORETRONIC
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Problems solved by technology
However, limited by the manufacturing process of the injection molding machine (injection molding machine) of the light guide plate, it is generally difficult to thin the light guide plate with a large size (such as 7 inches or more)
On the other hand, although the technology of making flat light guide plates by extrusion molding can control the minimum thickness of flat light guide plates at 0.3 mm to 0.6 mm, in order to match the thickness of flat light guide plates, light-emitting diodes with smaller volumes are usually selected to make them As a light source, to form a light source device with a flat light guide plate, because the technology of making a flat light guide plate by extrusion molding cannot make the light incident surface of the light guide plate on the side of the light source larger
As a result, such a light source device will have the disadvantages of low light extraction efficiency, low lifespan, and inability to meet large-scale applications.
Method used
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[0055] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0056] The manufacturing method of the light guide plate in this embodiment mainly includes two steps. A light-transmitting substrate is provided, wherein the light-transmitting substrate has a first surface, a second surface and a first light incident surface connecting the first surface and the second surface. Using a mold to make a first wedge-shaped portion on the first surface of the light-transmitting substrate at a position close to the first light-incident surface to form a light guide plate, wher...
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A method for manufacturing a light guide plate comprises the following steps: a light-penetrable substrate is provided which has a first surface, a second surface and a first light incident face which is connected with the first surface and the second surface; a mold is used to manufacture a first wedge-shaped part on the first surface of the light-penetrable substrate in the position close to the first light incident face, so as to form the light guide plate, and the thickness of the first wedge-shaped part decreases progressively in the direction away from the first light incident face.
Description
technical field [0001] The present invention relates to a manufacturing method of an optical element, and in particular to a manufacturing method of a light guide plate. Background technique [0002] Since a liquid crystal display (LCD) itself does not have the function of emitting light, a backlight system must be provided under the liquid crystal display to provide a light source to achieve the display function. The known backlight system is composed of two basic parts: a light source and a light guide plate (light guide plate), wherein the light source is further divided into a cold cathode fluorescent tube (cold cathode fluorescence lamp, CCFL) for a line light source and a light-emitting diode (LED) for a point light source. light emitting diode, LED). The light beam emitted by the light source will directly enter the light guide plate, be guided by the light guide plate, and evenly emit from the surface of the light guide plate. [0003] In the known technology, in o...
Claims
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IPC IPC(8): G02B6/00
Inventor 萧增科
Owner CORETRONIC