Display panel, manufacturing method thereof, and display device

Patent metadata

Field	Value
Publication number	US-2016004067-A1
Application number	US-201314395656-A
Country	US
Kind code	A1
Filing date	Nov 13, 2013
Priority date	Jun 20, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

The present invention provides display panel and manufacturing method thereof, and display device comprising the display panel. The display panel comprises: a first substrate and a second substrate provided opposite to each other, each of which comprises a plurality of photic areas and a plurality of shading areas; a plurality of pixel units formed between the first substrate and the second substrate; and a plurality of control units corresponding to the plurality of pixel units, respectively. In each pixel unit, a projection of the shading area of the first substrate on the second substrate completely covers the photic area of the second substrate. On a side of the first substrate opposite to the second substrate, a first reflective layer which is bendable is provided on each of the shading areas of the first substrate, and on a side of the second substrate opposite to the first substrate, a second reflective layer is provided on each of the shading areas of the second substrate. The first reflective layers, in a bent state, reflect light reaching the first reflective layers to the second reflective layers, and the second reflective layers reflect the light reflected thereto to the photic areas of the first substrate.

First claim

1 . A display panel, comprising:
a first substrate and a second substrate provided opposite to each other, each of the first substrate and the second substrate comprising a plurality of photic areas and a plurality of shading areas; a plurality of pixel units formed between the first substrate and the second substrate; and a plurality of control units which correspond to the plurality of pixel units, respectively, wherein, in each of the pixel units, a projection of the shading area of the first substrate on the second substrate completely covers the photic area of the second substrate, on a side of the first substrate opposite to the second substrate, a first reflective layer which is bendable is provided on each of the shading areas of the first substrate, and on a side of the second substrate opposite to the first substrate, a second reflective layer is provided on each of the shading areas of the second substrate, in each of the pixel units, the control unit corresponding to the pixel unit drives the first reflective layer provided on the shading area of the first substrate in the pixel unit, and the first reflective layers, in a bent state, is capable of reflecting light, reaching the first reflective layers after passing through the photic areas of the second substrate, to the second reflective layers, and the second reflective layers reflect the light reflected thereto to the photic areas of the first substrate.

2 . The display panel according to claim 1 , wherein, each of the first reflective layers comprises at least one reflective sheet, and each of the control units comprises at least one electrode provided in the corresponding pixel unit, and each of the at least one electrode is connected to each of the at least one reflective sheet, respectively;
degree of bending of the reflective sheet varies with a driving voltage supplied by the electrode connected thereto.

3 . The display panel according to claim 2 , wherein, each of the control units further comprises at least one thin film transistor, and the electrode is connected to an external control circuit via the thin film transistor.

4 . The display panel according to claim 1 , wherein, light reflected by the second reflective layers provided on two adjacent shading areas of the second substrate has different colors.

5 . The display panel according to claim 4 , wherein, every three pixel units constitute one pixel structure, and
in each pixel structure, a red filter, a green filter and a blue filter are provided on the second reflective layers provided on the shading areas of the second substrate in the three pixel units, respectively.

6 . The display panel according to claim 4 , wherein, every three pixel units constitute one pixel structure, and
in each pixel structure, quantum dots with particle diameters of 4 to 6 nm and quantum dots with particle diameters of 2.2 to 3 nm are provided on the second reflective layers provided on the shading areas of the second substrate in two of the three pixel units, respectively, and when excited by blue light, the quantum dots with particle diameters of 4 to 6 nm emit red light and the quantum dots with particle diameters of 2.2 to 3 nm emit green light.

7 . The display panel according to claim 6 , wherein, a material of the quantum dots includes any one or more of CdSe/ZnSe, CdSe/ZnS, CdSe/CdS, CdS/ZnS, CdS/HgS, CdSe/ZnS/CdS, CdSe/CdS/ZnS.

8 . The display panel according to claim 2 , wherein, each of the reflective sheets comprises a light-reflecting film and an electro-bend film attached to the light-reflecting film, the electrode is provided on the side of the first substrate opposite to the second substrate, and the electro-bend film is connected to the electrode.

9 . The display panel according to claim 8 , wherein, the electro-bend film is made of a material containing polyacrylic rubber or vinylidene fluoride compound.

10 . The display panel according to claim 8 , wherein, the electro-bend film bends in a direction away from the first substrate when driven by the electrode.

11 . The display panel according to claim 8 , wherein, the light-reflecting film is made of a material containing any one of reflective fabric, aluminium and copper.

12 . The display panel according to claim 1 , wherein, the second reflective layer is made of a material including any one of reflective fabric, aluminium and copper.

13 . The display panel according to claim 1 , further comprising a shielding layer, which covers the shading areas of the first substrate.

14 . A manufacturing method of a display panel, comprising steps of:
preparing a first substrate, which includes a plurality of photic areas and a plurality of shading areas; forming first reflective layers which are bendable on the shading areas of the first substrate; preparing a second substrate, which includes a plurality of photic areas and a plurality of shading areas; forming second reflective layers on the shading areas of the second substrate; and forming the display panel with the first substrate and the second substrate, wherein, a side of the first substrate on which the first reflective layers are formed is opposite to a side of the second substrate on which the second reflective layers are formed, and projections of the shading areas of the first substrate on the second substrate completely cover the photic areas of the second substrate.

15 . The manufacturing method of a display panel according to claim 14 , wherein, the step of forming the first reflective layers comprises steps of:
sequentially forming an electrode layer, an electro-bend film layer and a light-reflecting film layer on the first substrate; sequentially removing the light-reflecting film layer and the electro-bend film layer on the photic areas of the first substrate through an etching process, and keeping the light-reflecting film layer and the electro-bend film layer on the shading areas of the first substrate, and the remaining light-reflecting film layer and electro-bend film layer forming reflective sheets, and the reflective sheets forming the first reflective layers on the shading areas of the first substrate; and patterning the electrode layer through an etching process to form electrodes, such that each of the electrodes is at one end of the reflective sheet.

16 . The manufacturing method of a display panel according to claim 14 , further comprising a step of:
forming a shielding layer covering the shading areas of the first substrate on the first substrate.

17 . A display device, comprising the display panel according to claim 1 .

18 . The display device according to claim 17 , wherein, the display device further comprises a backlight source used as a light source for the display panel.

19 . The display device according to claim 17 , wherein, the second substrate of the display panel is integrated with an optical film material of the backlight source of the display device.

20 . The display device according to claim 19 , wherein, the optical film material comprises any one of a light guide plate, a diffusion plate and a prism film.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhao Jisheng

Classifications

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G02B26/0841 Primary

  the reflecting element being moved or deformed by electrostatic means · CPC title

• G02B5/201

  in the form of arrays · CPC title

• G02B26/0825 Primary

  the reflecting element being a flexible sheet or membrane, e.g. for varying the focus (flexible mirrors for cosmetic use A45D42/24) · CPC title

• G02B1/12

  by surface treatment, e.g. by irradiation · CPC title