Color filter substrate and manufacturing method thereof, and display device

• US 10,473,838 B2
• Filed: 04/27/2016
• Issued: 11/12/2019
• Est. Priority Date: 02/29/2016
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Zhang, Minghui
• Primary Examiner(s): Duong, Thoi V
• Application Number:
  US15/538,867
• Publication Number:
  US 20180106935A1
• Time in Patent Office: 1,294 Days
• CPC Class Codes: G02B 1/113 using inorganic layer materials only
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/286 having four or fewer layers, e.g. for achieving a colour effect
• CPC Class Codes: G02F 1/113 Circuit or control arrangements
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation

Abstract

A color filter substrate and a manufacturing method thereof, and a display device are disclosed. The color filter substrate includes: a base substrate, a plurality of color filter units of different colors arranged on a side of the base substrate, and a light anti-reflection layer arranged on the base substrate and on a light emergent side of the color filter units. The light anti-reflection layer is capable of increasing a light transmission rate of at least one color filter unit. The effect of improving the light transmission rate can be realized.

Claims

1. A color filter substrate, comprising:

a base substrate,

a plurality of color filter units of different colors arranged on a side of the base substrate, and

a light anti-reflection layer arranged on the base substrate and on a light emergent side of the color filter units, the light anti-reflection layer being capable of increasing a light transmission rate of at least one color filter unit,

wherein a position where the light anti-reflection layer is arranged on the base substrate corresponds to a position where at least one color filter unit is arranged on the base substrate, a thickness of the light anti-reflection layer is relevant to a wavelength of color light corresponding to at least one color filter unit, and the light anti-reflection layer includes a plurality of light anti-reflection units in one-to-one correspondence with the color filter units,

a thickness of each light anti-reflection unit is nλ

_light/4, where n is an odd number, and λ

_light is a wavelength of the color light corresponding to the color filter unit corresponding to the light anti-reflection unit,

the color filter substrate is an array substrate with a color filter integrated thereon; and

the light anti-reflection layer is arranged on a side of the color filter away from the base substrate.

2. The color filter substrate according to claim 1, wherein

the color filter units include a red color filter unit, the light anti-reflection layer includes a red light anti-reflection unit corresponding to the red color filter unit, and

a thickness of the red light anti-reflection unit is nλ

_red/4, where n is an odd number, λ

_red is a wavelength of red light, and a range of λ

_red is greater than or equal to 620 nm and less than or equal to 760 nm.

3. The color filter substrate according to claim 1, wherein

the color filter units include a green color filter unit, the light anti-reflection layer includes a green light anti-reflection unit corresponding to the green color filter unit, and

a thickness of the green light anti-reflection unit is nλ

_green/4, where n is an odd number, λ

_green is a wavelength of green light, and a range of λ

_green is greater than or equal to 505 nm and less than or equal to 566 nm.

4. The color filter substrate according to claim 1, wherein

the color filter units include a blue color filter unit, the light anti-reflection layer includes a blue light anti-reflection unit corresponding to the blue color filter unit, and

a thickness of the blue light anti-reflection unit is nλ

_blue/4, where n is an odd number, λ

_blue is a wavelength of blue light, and a range of λ

_blue is greater than or equal to 460 nm and less than or equal to 475 nm.

5. The color filter substrate according to claim 1, wherein the thickness of the blue light anti-reflection unit is less than or equal to a thickness of the blue color filter unit.

6. The color filter substrate according to claim 1, wherein a material of the light anti-reflection layer includes:

photo resist.

7. A display device, comprising:

the color filter substrate according to claim 1.

8. A manufacturing method for a color filter substrate, comprising:

forming a plurality of color filter units of different colors on a side of a base substrate; and

forming a light anti-reflection layer on the base substrate and on a light emergent side of the color filter units, the light anti-reflection layer being capable of increasing a light transmission rate of at least one color filter unit,

wherein the light anti-reflection layer includes a plurality of light anti-reflection units in one-to-one correspondence with the color filter units,

a thickness of each light anti-reflection unit is nλ

_light/4, where n is an odd number, and λ

_light is a wavelength of the color light corresponding to the color filter unit corresponding to the light anti-reflection unit,

the color filter substrate is an array substrate with a color filter integrated thereon; and

forming of the light anti-reflection layer includes;

forming the light anti-reflection layer on a side of the color filter apart from the base substrate.

9. The manufacturing method for a color filter substrate according to claim 8, wherein

the color filter units include:

a red filter unit, a green filter unit and a blue filter unit;

the light anti-reflection layer includes;

a red light anti-reflection unit, a green light anti-reflection unit and a blue light anti-reflection unit, and

the red light anti-reflection unit corresponds to the red filter unit, the green light anti-reflection unit corresponds to the green filter unit, and the blue light anti-reflection unit corresponds to the blue filter unit.

10. The manufacturing method for a color filter substrate according to claim 9, wherein forming of the light anti-reflection layer includes:

respectively performing three masking processes, so as to form the red light anti-reflection unit on a position corresponding to the red filter unit on the base substrate, form the green light anti-reflection unit on a position corresponding to the green filter unit on the base substrate, and form the blue light anti-reflection unit on a position corresponding to the blue filter unit on the base substrate.