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US 2017/0254948 A1Published application
Glass light guide plate, mold, and method of manufacturing same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsFENG-YUEN DAI, CHAU-JIN HU, CHIN-LUNG CHIU, HSIN-HUA CHANG, YUNG-LUN HUANG, YAO-CHIEN CHUANG, CHUNG-PEI WANG
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Abstract
A mold which is made of a porous heat-resistant material comprises a first surface and a second surface opposite to the first surface. A plurality of light guide spots are formed on the first surface. The light guide spots are light guide spots. The first surface is a smooth polished surface, the mold enables direct manufacture of light guide plates for less heat expended.
Claims10
A mold made of a porous heat-resistant material, the mold comprising:
- a first surface and a second surface opposite to the first surface, wherein the first surface is a smooth polished surface;
- a plurality of light guide spots formed on the first surface, wherein the light guide spots are substantially hemispherical recesses.
A method of manufacturing a glass light guide plate, comprising:
- providing a mold and a glass substrate, the mold being made of a porous heat-resistant material and comprising a first surface and a second surface opposite to the first surface, the first surface being smooth and polished;
- forming a plurality of light guide spots in the mold, wherein the light guide spots are substantially hemispherical recesses, the glass substrate comprises an upper surface and a lower surface opposite to the upper surface, a glass transition temperature of the glass substrate is less than a heat resistance temperature of the mold;
- heating the mold to the glass transition temperature of the glass substrate;
- maintaining the temperature of the mold at the glass transition temperature, placing the lower surface of the glass substrate on the first surface of the mold;
- exhausting air from the mold to adhere the glass substrate on the first surface;
- and
- separating the mold from the glass substrate, whereby the glass substrate forms the glass light guide, the light guide plate comprising a plurality of hemispherical protrusions corresponding to the hemispherical recesses.
4 more elements
Dependencies are inferred from the claim text.