COA substrate and preparation method thereof as well as display device

A technology for substrates and array substrates, applied in optics, instruments, nonlinear optics, etc., can solve problems that do not consider the polarization characteristics of quantum dots, and achieve the effect of thinning and thinning

Inactive Publication Date: 2015-12-09
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors have found at least the following problems in the prior art: when quantum dots are applied to display products, only how to excite the quantum dots to emit light of different colors i

Method used

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  • COA substrate and preparation method thereof as well as display device
  • COA substrate and preparation method thereof as well as display device
  • COA substrate and preparation method thereof as well as display device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1:

[0032] Such as figure 1 As shown, this embodiment provides a COA substrate, which includes an array substrate 10 and a color filter layer 20 disposed on the light emitting surface side of the array substrate 10. The color filter layer 20 includes filters 21 / of different colors. 22 / 23, the filter 21 / 22 / 23 is formed of a quantum dot material; the quantum dot has an orientation for converting natural light into polarized light.

[0033] Since the filter 21 / 22 / 23 in the color filter layer 20 of the COA substrate in this embodiment is made of quantum dot materials, and the quantum dots have orientations that can convert natural light into polarized light, the COA substrate is applied In the display panel, there is no need for a lower polarizer (the polarizer on the side close to the backlight) at this time, so that the thickness of the display panel is reduced, and the display device is thinner and lighter.

[0034] Wherein, the COA substrate includes a display area ...

Example Embodiment

[0041] Example 2:

[0042] This embodiment provides a method for preparing a COA substrate, and the COA substrate may be the COA substrate in Embodiment 1. The method specifically includes the following steps:

[0043] The steps of forming the array substrate 10 and forming the color filter layer 20 on the light emitting surface side of the array substrate 10. Wherein, the step of forming the color filter 21 / 22 / 23 includes:

[0044] Filters 21 / 22 / 23 of different colors are sequentially formed on the light-emitting surface side of the array substrate 10, wherein the material of the filter 21 / 22 / 23 is quantum dots; the quantum dots have an orientation, To convert natural light into polarized light.

[0045] Wherein, the filters of different colors are: red filter R, green filter G, blue filter B; or, the filters of different colors are: red filter R, green Filter G, blue filter B / yellow filter; or, the filters of different colors are: red filter R, green filter G, blue filter B, whit...

Example Embodiment

[0050] Example 3:

[0051] Such as Figure 4 As shown, this embodiment provides a display device, which includes the COA substrate of Embodiment 1, and also includes an opposing cell substrate 40 disposed opposite to the COA substrate, and an upper polarizer 50 is provided on the light emitting surface side of the opposing cell substrate 40 However, since the quantum dots in the color filter layer 20 in the COA substrate are oriented and can convert natural light into polarized light, the arrangement of the lower polarizer can be omitted, so the display device of this embodiment is light and thin.

[0052] The display device may be any product or component with a display function, such as a liquid crystal display panel, electronic paper, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, etc.

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Abstract

The invention provides a COA substrate and a preparation method thereof as well as a display device, belonging to the technical field of display and solving the problem that the existing display device is relatively thick. The COA substrate provided by the invention comprises an array substrate, a colored optical filter layer which is arranged at the light emitting surface side of the array substrate, wherein the colored optical filter layer comprises optical filters with different colors, and the optical filters are prepared from quantum dot materials; quantum dots have orientation and are used for converting natural light into polarized light. As the optical filters of the colored optical filter layer of the COA substrate are prepared from the quantum dot materials, the quantum dots have orientation, and can be used for converting the natural light into the polarized light, so that the COA substrate is applied to a display panel, a polarizing film is not needed at the moment, so that the thickness of the display panel is reduced, and further, the lightness and thinness of the display device can be realized.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a COA substrate, a preparation method thereof, and a display device. Background technique [0002] Quantum Dot (QuantumDot) is a semiconductor nanostructure that binds conduction band electrons, valence band holes, and excitons in three spatial directions. This constraint can be attributed to electrostatic potential (by external electrodes, doping, strain , impurity generation), the interface of two different semiconductor materials (for example: in self-assembled quantum dots), the surface of a semiconductor (for example: semiconductor nanocrystals), or a combination of the above three. Quantum dots have separate quantized energy spectra, corresponding to wave functions that are spatially located in the quantum dot, but extend over several lattice periods. A quantum dot has an integer number (1-100) of electrons, holes or hole-electron pairs, that is, the electric ...

Claims

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Application Information

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IPC IPC(8): G02F1/1335G02B5/20
CPCG02B5/20G02F1/133514G02F1/133516
Inventor 闫龙
Owner BOE TECH GRP CO LTD
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