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

Light emitting diode device and liquid crystal display device adopting same

A technology of light-emitting diodes and liquid crystal modules, which is applied in the field of liquid crystal display devices and light-emitting diode devices, and can solve problems such as chromatic aberration and product quality degradation

Inactive Publication Date: 2014-06-25
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the divergence angle of the mixed white light is enlarged using a secondary optical lens, a yellow halo effect occurs, which causes chromatic aberration when it is used as a backlight for a display, resulting in a decrease in product quality

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
  • Light emitting diode device and liquid crystal display device adopting same
  • Light emitting diode device and liquid crystal display device adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] See figure 1 , figure 1 It is a schematic diagram of a light emitting diode device 100 according to an embodiment of the present invention. The LED device 100 includes several LED chips 10 , a diffusion plate 20 , a fluorescent layer 30 and a secondary lens 40 .

[0014] The LED chips 10 are all blue light chips, and each secondary lens 40 is disposed on a LED chip 10 . The light emitted by the light-emitting diode chip 10 is diverged and deflected by the secondary lens 40 , thereby forming blue light with a single wavelength, and forming a light-emitting angle greater than 120°. Further, since the light emitted by each LED chip 10 is enlarged after passing through the secondary lens 40, the light intensity of the area between two adjacent LED chips 10 increases, thereby appropriately increasing the 10, the illumination of the same area can be realized by using fewer LED chips 10.

[0015] The diffusion plate 20 is disposed between the secondary lens 40 covering the...

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
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a light emitting diode device, which comprises a light emitting diode chip, a secondary lens and a fluorescent layer internally provided with fluorescent powder, wherein the secondary lens is arranged between the light emitting diode chip and the fluorescent layer; and light emitted by the light emitting diode chip is diffused via the secondary lens to excite the fluorescent powder inside the fluorescent layer to be mixed to obtain white light. The invention also relates to a liquid crystal display device adopting the light emitting diode device.

Description

technical field [0001] The invention relates to a light-emitting device, in particular to a light-emitting diode device and a liquid crystal display device using the device. Background technique [0002] Existing light-emitting diode devices, such as light-emitting diode backlight modules, usually use a plurality of blue light chips and yellow phosphors to obtain white outgoing light. [0003] However, the light emitting angle of the light emitting diode chip is about 120°, and the light intensity of the forward light is greater than that of the side light. At present, the industry usually uses a blue light-emitting diode chip with yellow phosphor, and a secondary optical lens is arranged outside the blue light-emitting diode chip and yellow phosphor. Part of the blue light emitted by the blue light-emitting diode chip excites the yellow phosphor to produce yellow light. The light is mixed with another part of the blue light emitted by the blue light-emitting diode chip to ...

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 Applications(China)
IPC IPC(8): H01L33/50H01L33/58G02F1/13
CPCH01L33/504G02F1/133603G02F1/133606H01L33/58
Inventor 曾永昌
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD