Backlight module

A technology of backlight module and light guide plate, which is applied in the field of backlight module and display module, can solve the problems such as the negative impact on the visual effect of liquid crystal display devices, and achieve the effect of improved display quality and good light uniformity

Inactive Publication Date: 2011-07-06
WINTEK CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is to say, although the configuration of the brightness enhancement film can effectively improve the display brightness of

Method used

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Examples

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Embodiment Construction

[0013] figure 1 It is a schematic diagram of a backlight module according to an embodiment of the present invention. Please also refer to figure 1 , in this embodiment, the backlight module 100 includes a light guide plate 110 , a point light source 120 , a first brightness enhancement sheet 130 and a second brightness enhancement sheet 140 . In particular, the backlight module 100 of this embodiment is, for example, a side-illuminated backlight module with a single point light source.

[0014] In addition, in order to further improve the utilization rate of the light source, the backlight module 100 of this embodiment further includes a reflection sheet 150 and a diffusion sheet 160 . The reflective sheet 150 is disposed under the light guide plate 110 and has high reflectivity, so it can reflect the light emitted by the point light source 120 , thereby improving the utilization efficiency of the point light source 120 . The diffusion sheet 160 is disposed between the ligh...

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Abstract

The invention discloses a backlight module, which comprises a light guide plate, a point light source, a first brightening plate, and a second brightening plate. The light guide plate is provided with a rectangular pre-view area; the point light source is provided with an emergent surface; a reference line is crossed with the boundary of the rectangular pre-view area by 45 degrees; the normal line of the emergent surface is crossed with the reference line to form a first included angle; moreover, the first included angle is between positive and negative 18 degrees by taking the reference line as a datum line; the first brightening plate is arranged above the light guide plate, and is provided with a plurality of first prism structures; the first prism structures extend along a first extension direction; the first extension direction is crossed with the normal line of the emergent surface to form a second included angle; the second included angle is between positive and negative 25 degrees by taking the normal line of the emergent surface as the datum line; and the second brightening plate is arranged between the light guide plate and the first brightening plate.

Description

technical field [0001] The present invention relates to a light source module, and in particular to a backlight module and a display module using the backlight module. Background technique [0002] The liquid crystal display panel uses liquid crystal as the display medium, and the liquid crystal itself is a non-self-luminous molecule, so in order to achieve the display effect, the liquid crystal display panel is combined with a backlight module to form a liquid crystal display device. Currently on the market, the brightness requirements of liquid crystal display devices are getting higher and higher, so the industry often adds an upper brightness enhancement film and a lower brightness enhancement film between the backlight module and the liquid crystal display panel, so that the light emitted by the backlight module The light can be more concentrated in the front view direction to enhance the display brightness. [0003] The upper brightness enhancement sheet and the lower...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V8/00F21V5/02F21V13/00G02F1/13357
Inventor 叶志庭游璋韦杨念萦黄国瑞石英正
Owner WINTEK CORP
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