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Lateral entry type backlight module and display device

A side-entry backlight and module technology, which is applied in the field of side-entry backlight modules and display devices, can solve the problems of affecting the collimation effect and light output efficiency, loss of light, and low light output efficiency.

Inactive Publication Date: 2018-06-29
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, in this structure, the dot matrix light source is located on the focal plane of the lenses in the lens array, and one lens can only collimate the incident light within the aperture of the lens, and the light outside the aperture of the lens will be incident on the adjacent The lens cannot be collimated, which seriously affects the overall collimation effect and light extraction efficiency
If the light outside the aperture is blocked, the collimation can be improved, but most of the light will be lost, and the light extraction efficiency is very low

Method used

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  • Lateral entry type backlight module and display device
  • Lateral entry type backlight module and display device
  • Lateral entry type backlight module and display device

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Embodiment Construction

[0033] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0034] Figure 1~2 It is an edge-type backlight module 1 shown according to an embodiment of the present invention. The edge-type backlight module 1 includes: a light guide plate 11 , a light-emitting element 12 , a substrate layer 13 , a coupling grating layer 14 and a collimating extraction grating layer 15 .

[0035] Such as figure 1 As shown, the substrate layer 13 is located between the l...

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Abstract

The invention relates to a lateral entry type backlight module and a display device. The lateral entry type backlight module comprises a light guide plate, a light emitting part, a substrate layer, acoupling grating layer and a collimation extraction grating layer, wherein the substrate layer is positioned between the light emitting part and the light incidence surface of the light guide plate; the substrate layer is provided with a groove for containing the light emitting part; the coupling grating layer is positioned between the substrate layer and the light incidence surface of the light guide plate; the collimation extraction grating layer is arranged on the light emitting surface of the light guide plate; the light emitted by the light emitting part passes through the substrate layerand enters the coupling grating layer, the received light is coupled to the light incidence surface of the light guide plate by the coupling grating layer, and the light entering the light guide plate is diffracted by the collimation extraction grating layer to form the parallel light which is vertical to the light emitting surface. The lateral entry type backlight module has the advantages thatthe light efficiency is improved; the light guide plate is thinner, and the thin type display device is favorably developed.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an edge-type backlight module and a display device. Background technique [0002] In the related art, point light sources and lenses are often used to achieve backlight collimation. However, in this structure, the dot matrix light source is located on the focal plane of the lenses in the lens array, and one lens can only collimate the incident light within the aperture of the lens, and the light outside the aperture of the lens will be incident on the adjacent The lens cannot be collimated, which seriously affects the overall collimation effect and light extraction efficiency. If the light outside the aperture is blocked, the collimation can be improved, but most of the light will be lost, and the light extraction efficiency is very low. Contents of the invention [0003] The invention provides a side-entry backlight module and a display device to solve the deficiencies in t...

Claims

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Application Information

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IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0023G02F1/133615
Inventor 孟宪东谭纪风王维陈小川高健孟宪芹
Owner BOE TECH GRP CO LTD
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