Unlock instant, AI-driven research and patent intelligence for your innovation.

Surface light source, manufacturing method thereof, backlight module and display device

A production method and surface light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reduced utilization of light energy, and achieve the effect of improving utilization and avoiding absorption

Active Publication Date: 2022-04-22
BOE TECH GRP CO LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a surface light source and its manufacturing method, a backlight module and a display device to solve the problem that in the process of making a surface light source, part of the light emitted by a point light source will be absorbed by the exposed substrate and welding pad, resulting in light The problem of reduced energy utilization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface light source, manufacturing method thereof, backlight module and display device
  • Surface light source, manufacturing method thereof, backlight module and display device
  • Surface light source, manufacturing method thereof, backlight module and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to image 3 , which shows a flow chart of a method for manufacturing a surface light source according to an embodiment of the present invention, which may specifically include the following steps:

[0037] Step 301, forming multiple point light sources on the circuit board.

[0038] In the embodiment of the present invention, such as Figure 4 As shown, a plurality of point light sources 42 are formed by welding on a circuit board 41, the circuit board 41 can be FPC (Flexible Printed Circuit, flexible circuit board) or PCB (Printed Circuit Board, printed circuit board), and the point light sources 42 can be LED ( Light Emitting Diode, light emitting diode) chip.

[0039] Specifically, apply solder on the pads of the circuit board, stick the point light source on the solder, heat the circuit board to melt the solder, and weld the point light source on the circuit board on the pad.

[0040] Such as Figure 5 As shown, the circuit board 41 includes a substrate 4...

Embodiment 2

[0063] An embodiment of the present invention provides a surface light source, such as Figure 7 As shown, it includes: a circuit board 41 , a plurality of point light sources 42 formed on the circuit board 41 ; a reflective material 44 , the reflective material 44 covers the area on the circuit board 41 except for the plurality of point light sources 42 .

[0064] By covering the area of ​​the circuit board 41 with the reflective material 44 except for a plurality of point light sources 42, the substrate 411 and the pad 412 in the circuit board 41 are completely covered, thereby preventing the substrate 411 and the pad 412 from emitting light to the point light source 42. The light absorption improves the utilization rate of light energy.

[0065] Wherein, the reflective material 44 can be white oil, when the thickness of the reflective material 44 is bigger, the reflectivity of the reflective material 44 is higher, therefore, while improving the reflectivity of the reflectiv...

Embodiment 3

[0070] An embodiment of the present invention provides a backlight module, including the surface light source in the second embodiment above.

[0071] Wherein, the backlight module may be a direct type backlight module, and the backlight module may also include an optical film, such as a diffusion sheet.

[0072] In addition, for the specific description of the surface light source, reference may be made to the descriptions of Embodiment 1 and Embodiment 2, which will not be repeated in this embodiment of the present invention.

[0073] An embodiment of the present invention also provides a display device, including the above-mentioned backlight module.

[0074] In addition, the display device also includes an LCD (Liquid Crystal Display, liquid crystal display) display panel disposed on the light emitting side of the backlight module.

[0075] In practical applications, the display device can be any product or component with a display function, such as a mobile phone, a tabl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
reflectanceaaaaaaaaaa
Login to View More

Abstract

The invention provides a surface light source and a manufacturing method thereof, a backlight module and a display device, and relates to the field of display technology. In the present invention, a plurality of point light sources are formed on the circuit board, a reflective material is coated on the circuit board formed with a plurality of point light sources, and through the fluidity of the reflective material, the reflective material covers the circuit board except for the plurality of point light sources. area. After forming a plurality of point light sources on the circuit board, coating the reflective material on the circuit board, using the fluidity of the reflective material, the reflective material covers the area on the circuit board except for the multiple point light sources, and the exposed parts of the circuit board The substrate and the welding pad are completely covered, thereby avoiding the absorption of the light emitted by the point light source by the substrate and the welding pad, and improving the utilization rate of light energy.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a surface light source and a manufacturing method thereof, a backlight module and a display device. Background technique [0002] With the continuous development of display technology, HDR (High-Dynamic Range, high dynamic range) technology is applied to the display device, which can greatly improve the picture quality of the display device, and the realization of HDR technology needs to cooperate with the direct type backlight with surface light source mod. [0003] Such as figure 1 and figure 2 As shown, at present, the surface light source in the direct type backlight module is obtained by coating the reflective material 12 on the circuit board 11, the circuit board 11 includes the substrate 11 and the pad 12 formed on the substrate 11, and then through exposure, development Remove the reflective material 12 in the die-bonding area (that is, the area where the point light...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133605G02F1/133612
Inventor 汪志强王雪绒高斐陈雷孙川马鑫芮博超
Owner BOE TECH GRP CO LTD