Reflective display panel and manufacturing thereof, and display device

Patent metadata

Field	Value
Publication number	US-2021181575-A1
Application number	US-201816077102-A
Country	US
Kind code	A1
Filing date	Feb 13, 2018
Priority date	Mar 3, 2017
Publication date	Jun 17, 2021
Grant date	—

Abstract

A reflective display panel (1), a manufacturing method thereof and a display device are provided. The reflective display panel (1) includes a first base substrate (11) and a second base substrate (12) which are oppositely arranged. A reflecting layer (13) is arranged at a side, close to the second base substrate (12), of the first base substrate (11), and a thin film transistor (14) and a lead (15) are arranged at a side, close to the first base substrate (11), of the second base substrate (12), which solves the problems of requiring more housing materials to be used when the reflective display panel (1) is packaged, as well as causing the waste of housing materials and impossibility of achieving the frameless display side of the reflective display panel (1), thereby reducing the waste of housing materials and achieving the frameless display side of the reflective display panel (1).

First claim

1 . A reflective display panel comprising a first base substrate and a second base substrate which are opposite to each other,
wherein a reflecting layer is on a side, close to the second base substrate, of the first base substrate, and a thin film transistor and a lead are on a side, close to the first base substrate, of the second base substrate.

2 . The reflective display panel according to claim 1 , further comprising liquid crystals between the first base substrate and the second base substrate,
wherein a quarter-slide is on a side, away from the first base substrate, of the second base substrate; a polarizer is on a side, away from the first base substrate, of the quarter-slide; and an included angle between a light transmission axis of the polarizer and an optical axis of the quarter-slide is 45 degrees, and the optical axis of the quarter-slide is parallel to a long axis of the liquid crystal.

3 . The reflective display panel according to claim 1 , wherein the thin film transistor comprises a plurality of functional film layers;
a reflectivity of the functional film layer, close to the second base substrate, in the plurality of functional film layers is lower than reflectivities of the other functional film layers; and the other functional film layers are any of the plurality of functional film layers other than the functional film layer close to the second base substrate.

4 . The reflective display panel according to claim 3 , wherein the reflectivity of the functional film layer, close to the second base substrate, in the plurality of functional film layers is lower than 10%.

5 . The reflective display panel according to claim 1 , wherein the thin film transistor comprises a plurality of functional film layers; a film layer is on the side, close to the first base substrate, of the second base substrate; the thin film transistor and the lead are on a side, close to the first base substrate, of the film layer;
wherein an orthographic projection region of the thin film transistor on the second base substrate coincides with an orthographic projection region of the film layer on the second base substrate; and the reflectivity of the film layer is lower than the reflectivity of any of the plurality of functional film layers.

6 . The reflective display panel according to claim 5 , wherein the reflectivity of the film layer is lower than 10%.

7 . The reflective display panel according to claim 2 , wherein a color film layer is on a side, close to the second base substrate, of the reflecting layer; and the liquid crystals are between the color film layer and the thin film transistor.

8 . The reflective display panel according to claim 1 , wherein the second base substrate has a display region and a bonding region;
the thin film transistor is in the display region, and the lead is in the bonding region; an orthographic projection region of the first base substrate on the second base substrate is the display region; and the reflecting layer overspreads the first base substrate.

9 . A manufacturing method of a reflective display panel, comprising the following steps:
forming a reflecting layer on a side of a first base substrate; forming a thin film transistor and a lead on a side of a second base substrate; and arranging the first base substrate and the second base substrate oppositely, such that the reflecting layer is arranged close to the second base substrate, and the thin film transistor and the lead are arranged close to the first base substrate.

10 . The method according to claim 9 , further comprising the following steps after the step of arranging the first base substrate and the second base substrate oppositely:
arranging liquid crystals between the first base substrate and the second base substrate; arranging a quarter-slide at a side, away from the first base substrate, of the second base substrate; and arranging a polarizer at a side, away from the first base substrate, of the quarter-slide, wherein an included angle between a light transmission axis of the polarizer and an optical axis of the quarter-slide is 45 degrees, and the optical axis of the quarter-slide is parallel to a long axis of the liquid crystal.

11 . The method according to claim 9 , wherein the thin film transistor comprises a plurality of functional film layers;
a reflectivity of the functional film layer, close to the second base substrate, in the plurality of functional film layers is lower than reflectivities of the other functional film layers; and the other functional film layers are any of the plurality of functional film layers other than the functional film layer close to the second base substrate.

12 . The method according to claim 11 , wherein the reflectivity of the functional film layer, close to the second base substrate, in the plurality of functional film layers is lower than 10%.

13 . The method according to claim 9 , wherein the thin film transistor comprises a plurality of functional film layers; the step of forming the thin film transistor and the lead at the side of the second base substrate comprises the following steps:
forming a film layer at the side of the second base substrate, and forming the thin film transistor and the lead on the second base substrate on which the film layer is formed; wherein an orthographic projection region of the thin film transistor on the second base substrate coincides with an orthographic projection region of the film layer on the second base substrate; and a reflectivity of the film layer is lower than the reflectivities of any of the functional film layers in the thin film transistor.

14 . The method according to claim 13 , wherein the reflectivity of the film layer is lower than 10%.

15 . The method according to claim 10 , further comprising the following step after the step of forming the reflecting layer at the side of the first base substrate:
forming a color film layer at a side, away from the first base substrate, of the reflecting layer, wherein after the step of arranging liquid crystals between the first base substrate and the second base substrate, the liquid crystals are between the color film layer and the thin film transistor.

16 . The method according to claim 9 , wherein the reflecting layer overspreads the first base substrate; the second base substrate has a display region and a bonding region; after the step of arranging the first base substrate and the second base substrate oppositely, an orthographic projection region of the first base substrate on the second base substrate is the display region; and the step of forming the thin film transistor and the lead at the side of the second base substrate comprises the following steps:
forming the thin film transistor in the display region on the side of the second base substrate, and forming the lead in the bonding region on the side of the second base substrate.

17 . A display device comprising a reflective display panel, wherein the reflective display panel comprises: a first base substrate and a second base substrate which are opposite to each other;
a reflecting layer is on a side, close to the second base substrate, of the first base substrate; and a thin film transistor and a lead are on a side, close to the first base substrate, of the second base substrate.

18 . The display device according to claim 17 , further comprising a housing and a printed circuit board,
wherein the printed circuit board is connected with the thin film transistor through the lead, and is on a side, away from the second base su

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Liu Mingxuan
• Guo Huibin
• Zhang Xiaoxiang

Classifications

• G02F1/133553 Primary

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/133638

  Waveplates, i.e. plates with a retardation value of lambda/n · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136222

  Colour filters incorporated in the active matrix substrate · CPC title

• G02F1/133531

  characterised by the arrangement of polariser or analyser axes · CPC title