This application is the U.S. national phase of PCT Appln. No PCT/CN2015/087702, filed Aug. 20, 2015 which claims priority to Chinese Application No. 201510344395.1, filed Jun. 19, 2015, the disclosures of which are incorporated in their entirety by reference herein.
The present disclosure belongs to a display technical field, specifically speaking, to a light emitting unit and a backlight having the same.
A liquid crystal display (LCD) generally includes a liquid crystal panel and a backlight module oppositely disposed, wherein the backlight module provides display light rays for the liquid crystal panel so that the liquid crystal panel completes the display. A conventional backlight module is matched with the liquid crystal panel in some aspects such as size, spectral color, brightness, and the like, thus ensuring that the color and brightness, etc. displayed by the liquid crystal panel have a favorable effect.
Color filters of different liquid crystal panels have different materials, different thicknesses and different transmissivity. Even if different liquid crystal panels have a same size, different designs for backlight modules is also required. In the existing backlight module, mostly a light emitting diode (LED) and an Organic Light Emitting Diode (OLED) are served as basic light emitting units, wherein the LED emits light rays with different wavelengths in accordance with different fluorescent powders and light emitting chips; and the OLED emits light rays with different wavelengths in accordance with different materials.
Display light rays generated by different backlight modules have different wavelengths. The liquid crystal panel presents different colors by means of a picture displayed by the display rays. For example, regarding an all-white picture, different backlight modules matched with a same color filter will present different chroma, wherein the chroma is based on a CIE1931 system.
With the development of the market and industry, current panel manufacturers mainly produce and sale the liquid crystal panels. In general, backlight modules are individually purchased and assembled in a complete machine factory (for example, TV manufacturers). To a panel manufacturer, various tests like a reliability test or a lighting test and the like performed to a liquid crystal panel mainly use a backlight module. Different size liquid crystal panels mainly differ in color filters, transmissivity, and the like. Adopting an unchangeable display light ray may lead to incorrect chroma of a white dot of different liquid crystal panels, which may bring harmful influence to the various tests.
In order to solve the problem existing in the prior art, a purpose of the present disclosure lies in providing a light emitting unit, which includes a first substrate and a plurality of first light emitting elements. The plurality of first light emitting elements is arranged on the first substrate in a certain arrangement rule. The first light emitting elements are light emitting diodes (LEDs) or organic light emitting diodes (OLEDs) of the same kind, or the first light emitting elements are LEDs or OLEDs of different kind.
Furthermore, the plurality of first light emitting elements are arranged on the first substrate in an array arrangement way.
Another purpose of the present disclosure also lies in providing a light emitting unit, which includes a second substrate, a plurality of second light emitting elements and a plurality of third light emitting elements. The plurality of second light emitting elements and the plurality of third light emitting elements are arranged on the second substrate in a certain arrangement rule. The second light emitting elements are LEDs of the same kind or different kind, and the third light emitting elements are OLEDs of the same kind or different kind.
Furthermore, the plurality of second light emitting elements and the plurality of third light emitting elements are arranged on the second substrate in an array arrangement way.
Furthermore, the LEDs of the same kind are LEDs with a same light emitting spectrum and a same chroma.
Furthermore, the OLEDs of the same kind are OLEDs with a same light emitting spectrum and a same chroma.
Furthermore, the LEDs of different kind are LEDs with different light emitting spectrum and different chroma.
Furthermore, the OLEDs of different kind are OLEDs with different light emitting spectrum and different chroma.
Another purpose of the present disclosure further lies in providing a backlight, which includes the above plurality of light emitting units arranged in a certain arrangement rule.
Furthermore, the plurality of light emitting units are arranged in an array arrangement way.
Advantageous effects of the present disclosure is as follows: in the light emitting unit and the backlight of the present disclosure, a variety of kind of the light emitting elements may be arbitrarily deployed so that the display light rays generated by the backlight module have different spectrum, thus, the requirement of the panel manufacturer to a backlight module capable for generating display light rays with different spectrum is satisfied.
These and/or other aspects, characteristics and advantages of the embodiments in the present disclosure will become apparent and more readily appreciated from the following description, taken in conjunction with the accompanying drawing in which:
Embodiments of the present disclosure will be described in detail below by referring to the accompany drawings. However, the present disclosure can be implemented in numerous different forms, and the present disclosure may not be explained to be limited hereto. Instead, these embodiments are provided for explaining the principle and actual application of the present disclosure, thus other skilled in the art can understand various embodiments and amendments which are suitable for specific intended applications of the present disclosure. In the drawings, in order to clarify the device, thicknesses of layers and regions are exaggerated. The same reference sign in the whole description and drawings may indicate the same element. It will be understood that although various elements may be described by using terms such as “first”, “second”, “third” and the like, the elements should not be limited by these terms. These terms are only used to distinguish one element from another.
Referring to
In the present disclosure, an arrangement way of the plurality of first light emitting elements 12 is not limited as illustrated in
In the first embodiment of the present disclosure, the LEDs of the same kind are LEDs with a same light emitting spectrum and a same chroma (in a CIE1931 system).
The OLEDs of the same kind are OLEDs with a same light emitting spectrum and a same chroma (in a CIE1931 system).
The LEDs of different kind are LEDs with different light emitting spectrum and different chroma (in a CIE1931 system).
The OLEDs of different kinds are OLEDs with different light emitting spectrum and different chroma (in a CIE1931 system).
Referring to
Referring to
In the present disclosure, the arrangement way of the plurality of second light emitting elements 22 and the plurality of third light emitting elements 23 is not limited as illustrated in
In the second embodiment of the present disclosure, the LEDs of the same kind are LEDs with a same light emitting spectrum and a same chroma (in a CIE1931 system).
The OLEDs of the same kind are OLEDs with a same light emitting spectrum and a same chroma (in a CIE1931 system).
The LEDs of different kind are LEDs with different light emitting spectrum and different chroma (in a CIE1931 system).
The OLEDs of different kind are OLEDs with different light emitting spectrum and different chroma (in a CIE1931 system).
Referring to
In addition, the backlight according to the first and second embodiments of the present disclosure may be applied in a backlight module as a light-emitting source of the backlight module. Since kinds of each light emitting element in the light emitting unit of the backlight may be arbitrarily allocated, backlight module adopting such a backlight can generate display light rays with different spectrum.
In conclusion, according to the light emitting unit and the backlight in the embodiments of the present disclosure, a variety of kinds of the light emitting elements may be arbitrarily deployed so that the display light rays generated by the backlight module have different spectrum, thus, the requirement of the panel manufacturer to a backlight module capable for generating display light rays with different spectrum is satisfied.
Although the present disclosure is described with reference to the special exemplary embodiments, while those skilled in the art will understand: various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and its equivalents.
Number | Date | Country | Kind |
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2015 1 0344395 | Jun 2015 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2015/087702 | 8/20/2015 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2016/201779 | 12/22/2016 | WO | A |
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Entry |
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International Search Report for PCT/CN2015/087702, English Translation attached to original, Both completed by the Chinese Patent Office dated Feb. 24, 2016, All together 6 Pages. |
Number | Date | Country | |
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20170139275 A1 | May 2017 | US |