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Backlight module

A technology of backlight module and light-emitting unit, which is applied in optics, nonlinear optics, lighting devices, etc., can solve the problems of reduced light quantity, dark shadow of main display window, and reduced display brightness of main display window, etc.

Inactive Publication Date: 2010-01-20
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the tape layer 15 is made of black tape, although the shadow phenomenon caused by the main display window when the secondary display window is displayed on the main display window can be slightly reduced, the tape layer 15 formed from the black tape is reflected back to the light guide plate 11. The amount of light in the main display window is greatly reduced, causing the display brightness of the main display window to be greatly reduced
On the other hand, if the adhesive tape layer 15 is made of white adhesive tape, although the display brightness of the main display window can be maintained to a certain degree, it will cause the secondary display window to cause dark shadows on the main display window when the main display window displays. more obvious
That is to say, the existing backlight module applied to a double-sided display module cannot simultaneously reduce the shadow phenomenon caused by the secondary display window on the main display window and enhance the main display window through the aforementioned adhesive tape layer. The dual purpose of display brightness

Method used

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Examples

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Embodiment Construction

[0051] see Figure 2A and Figure 2B ,in Figure 2A is a three-dimensional schematic diagram of a backlight module according to an embodiment of the present invention, Figure 2B for along Figure 2A The cross-sectional schematic diagram obtained by connecting BB' in the middle.

[0052] Such as Figure 2A and Figure 2B As shown, the backlight module of this embodiment is applied to a double-sided display module (not shown in the figure) and includes: a light emitting unit 21, a first frame body 22, a second frame body 23 and a light scattering sheet 24 . Wherein, the light emitting unit 21 is an organic electroluminescent unit (OLED), which is, for example, a white organic electroluminescent unit. In addition, the first frame body 22 is disposed on the lower side of the light emitting unit 21 to surround and form a first display window 221 , and the second frame body 23 is disposed on the upper side of the light emitting unit 21 to surround and form a second display w...

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Abstract

The invention relates to a backlight module, in particular to a backlight module suitable for a double-sided display module and capable of reducing shadow phenomenon in a primary display window caused when an auxiliary display window is displayed in the primary display window. The backlight module comprises a luminous unit, a first frame body which is arranged on one side of the luminous unit and forms a first display window in a surrounding way, a second frame body which is arranged on the other side of the luminous unit opposite to the first frame body and forms a second display window in a surrounding way, and a light scattering sheet, wherein the display area of the second display window is larger than that of the first display window; the first frame body is provided with a first frame surface; the light scattering sheet is arranged on the first frame surface; and the convex and concave surface of the light scattering sheet is adjacent to a light guide plate.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module which is suitable for a double-sided display module and can reduce the shadow phenomenon caused by the auxiliary display window when the main display window displays. Background technique [0002] In recent years, the application of double-sided displays has gradually increased, such as double-sided display modules used in clamshell mobile phones or through-wall double-sided displays. In the past, due to technical limitations, the double-sided display modules used in the industry directly combined two display modules back-to-back to display different information respectively. However, the double-sided display module formed by directly combining two display modules not only has considerable thickness, but also causes a lot of material waste, such as repeatedly setting two backlight modules. [0003] Therefore, it is proposed to directly use a backlight module capable of pr...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/1333F21V21/00
Inventor 戴铭成张义煇黄礼锹
Owner TPO DISPLAY
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