Light guide plate for onboard liquid crystal display and light guide plate assembly thereof

Abstract

The invention discloses a light guide plate for an onboard liquid crystal display and a light guide plate assembly thereof. The light guide plate assembly comprises the light guide plate for the onboard liquid crystal display and a metal structure piece which is used for fixing the light guide plate, wherein two opposite surfaces on each lug of the light guide plate are inclined surfaces; each inclined surface faces the light guide plate and is positioned on four rays by taking the light guide plate as the center; the metal structure piece is provided with two accommodating grooves of which are identical to two lugs in shape; the light guide plate is clamped in the metal structure piece; each lug is accommodated in a corresponding accommodating groove; and gaps exist between between the light guide plate and the metal structure piece except that each inclined surface is in tight contact with a groove. The light guide plate has the advantages that 1, the light guide plate can be reliably reinforced in a high / low-temperature circulation environment; 2, the internal stress of the light guide plate can be avoided and the reinforcing reliability is improved; and 3, the structure is simple, and no auxiliary part is in need.

Description

technical field [0001] The invention relates to a light guide plate and a light guide plate assembly with the light guide plate, in particular to a light guide plate for an airborne liquid crystal display and a light guide plate assembly with the light guide plate. Background technique [0002] According to the requirements of GJB150, the airborne liquid crystal display must meet the requirements of high and low temperature experiments. At present, the fixing of the light guide plate of most airborne liquid crystal displays is realized by clamping the lugs with metal structural parts. The lugs are designed to protrude at right angles. [0003] However, the light guide plate is made of PMMA material, and its linear expansion coefficient is generally 8×10 -5 / °C, and the metal structure for fixing the light guide plate is generally duralumin, and its linear expansion coefficient is 2×10 -5 / °C, the difference in linear expansion coefficient between the two is large. When th...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a light guide plate for an airborne liquid crystal display and a light guide plate assembly having the light guide plate for an airborne liquid crystal display, aiming at the problems existing in the existing assembly technology, Its purpose is to realize the fixation of the light guide plate under high and low temperature cycles through structural design, and solve the problem of light guide plate shaking at low temperature and deformation at high temperature

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