Light guide plate and a backlight module group using the same
A technology of backlight module and light guide plate, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of bright lines, uneven light mixing of light sources, etc., and achieve the effect of changing the light field distribution and improving the uneven light mixing of light sources
Inactive Publication Date: 2017-09-29
芜湖德仓光电有限公司
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Problems solved by technology
[0004] In order to overcome the problems of uneven mixed light and bright lines of the light source caused by the partitioned light guide in the prior art, the present invention provides a partitioned light guide plate with high display effect
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[0039] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0040] The present invention provides a light guide plate 20, comprising at least one light incident surface 201, and a light exit surface 202 perpendicular to the light incident surface 201; Parallel transmission, wherein, the light-emitting surface 202 is provided with a plurality of arc cylinders 203 in the direction of the X-axis extension, grooves E are arranged between adjacent arc cylinders 203, and the arc cylinders 203 are along the Y-axis of the light-emitting surface 202 The extending direction is arranged on the light guide plate 20 so that the light can be transmitted in parallel to form a uniform surface light source.
[0041] In addition, the top of the light guide plate 20 may also include a diffusion sheet, a brightness enhancement film, a composite optical film or a combination thereof, which can be adjusted according to requir...
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The invention relates to a light guide plate and a backlight module group using the same. The light guide plate comprises at least one of light entrance surface and a light emitting surface orthogonal with the light entrance surface. The light entrance surface receives light provided by a light source in an X axis extending direction; and the light is transmitted in parallel in a Y axis extending direction of the light emitting surface. A plurality of circular arc posts are arranged at the light emitting surface in the X axis extending direction; and grooves are formed between the adjacent circular arc posts. The circular arc posts are arranged at the light emitting surface along the Y axis extending direction of the light emitting surface to guide light to be transmitted in parallel in the light guide plate. Meanwhile, a control circuit in the backlight module group can light point light sources arranged in parallel selectively to form different light guide regions. The light guide plate and the backlight module group using the same have the following beneficial effects: because the micro-structure-based light guide plate is formed in an integrated manner, non-uniform light mixing of the light source due to mutual influences of light fields between different backlight sources can be avoided; and region-dividing displaying is guaranteed and the optical quality of the backlight module group is improved.
Description
technical field [0001] The invention relates to the field of backlight display, in particular to a light guide plate and a backlight module using the light guide plate. Background technique [0002] Since the liquid crystal display panel used for imaging in a liquid crystal display device cannot generate light itself, a light source must be provided through a backlight module to present images on the display panel, and as far as known technologies are concerned, the display panel can be It is divided into multiple display areas and each display area has a corresponding backlight source. When different backlight sources are turned on at the same time, although the backlight source corresponding to each display area provides a light source with different brightness, it is different due to the difference between the different backlight sources. The effect of the light field effect, that is, each display area may be interfered by the backlight corresponding to its adjacent displ...
Claims
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IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0016G02F1/133615
Inventor 熊远江杨秀清陈武
Owner 芜湖德仓光电有限公司