Method for manufacturing curved liquid crystal panel

Patent metadata

Field	Value
Publication number	US-9766508-B2
Application number	US-201414423988-A
Country	US
Kind code	B2
Filing date	Nov 5, 2014
Priority date	Oct 24, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

The present invention provides a method for manufacturing a curved liquid crystal panel, which includes Step 1: pre-setting radii of curvature of a CF substrate and an array substrate of a curved liquid crystal panel; Step 2: preparing the CF substrate ( 1 ) and the array substrate ( 2 ), the CF substrate ( 1 ) and the array substrate ( 2 ) being both in the form of a flat panel, where in step (2), a spacing distance L 2 between two adjacent data lines ( 21 ) and a spacing distance L 1 of black matrixes ( 11 ) in a direction in which the data lines ( 21 ) is lined up are set to be different; Step 3: individually curving the CF substrate ( 1 ) and the array substrate ( 2 ) to reach the pre-set radii of curvature of Step 1; and Step 4: subjecting the curved CF substrate ( 1 ) and array substrate ( 2 ) to vacuum lamination through curved surface lamination to be laminated together to form a curved liquid crystal panel. This method eliminates the displaying defects caused by the conventional way of manufacturing a curved liquid crystal panel and effectively enhances the product yield rate.

First claim

What is claimed is:

1. A method for manufacturing a curved liquid crystal panel, comprising the following steps:
(1) pre-setting radii of curvature of a color filter (CF) substrate and an array substrate of a curved liquid crystal panel;
(2) preparing the CF substrate and the array substrate, the CF substrate and the array substrate being both in the form of a flat panel, wherein the array substrate comprises a plurality of equally spaced data lines lined up thereon and the CF substrate comprises black matrixes arranged thereon in an array, a spacing distance L 2 between two adjacent ones of the data lines and a spacing distance L 1 of the black matrixes in a direction in which the data lines are lined up being arranged to be different according to the pre-set radii of curvature provided in step (1);
(3) separately curving the CF substrate and the array substrate to reach the pre-set radii of curvature of step (1); and
(4) subjecting the curved CF substrate and the curved array substrate, which are separate from each other, to vacuum lamination through curved surface lamination to be laminated together to form a curved liquid crystal panel.

2. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 further comprising step (5), in which the vacuum-laminated CF substrate and array substrate are subjected to cutting.

3. The method for manufacturing a curved liquid crystal panel as claimed in claim 2 , wherein step (5) uses erected panel cutting to carry out cutting.

4. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 , wherein the CF substrate and the array substrate comprise display zones formed thereon to correspond to each other and step (2) comprises coating a loop of enclosure resin on the CF substrate or the array substrate to enclose the display zone and dripping liquid crystal inboard the enclosure resin to form a liquid crystal layer.

5. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 , wherein the black matrix is formed through exposure with a photo m.

6. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 , wherein in step (2), with the CF substrate and the array substrate being in the form of a flat panel, the spacing distance L 2 between two adjacent ones of the data lines and the spacing distance L 1 of the black matrix in the direction in which the data lines are lined up are set in a proportional relationship and with the pre-set radius of curvature of the CF substrate being R and a cell thickness of the liquid crystal layer between the CF substrate and the array substrate being d, L 1 :L 2 =R:(R+d) or L 1 :L 2 =R:(R−d).

7. The method for manufacturing a curved liquid crystal panel as claimed in claim 6 , wherein in step (4), when the CF substrate and the array substrate are subjected to vacuum lamination through curved surface lamination to be laminated together, the black matrixes are distributed in a curving direction of the curved liquid crystal panel in such a way as to be respectively coincident with the data lines in a radial direction of the curved liquid crystal panel so that pixel areas of the array substrate and the CF substrate match each other.

8. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 , wherein in step (2), the CF substrate further comprises a plurality of photo spacers formed thereon and based on the radius of curvature that is pre-set for the CF substrate in step (1), heights of the photo spacers at different locations of the CF substrate are set to be different.

9. The method for manufacturing a curved liquid crystal panel as claimed in claim 8 , wherein in step (2), with the CF substrate and the array substrate in the form of a flat panel, the photo spacers located in a middle portion of the CF substrate have heights greater than those of the photo spacers in two side portions, and in step (4), when the CF substrate and the array substrate are subjected to vacuum lamination through curved surface lamination, the photo spacers at different locations of the CF substrate are of the same height so that the cell thickness of the liquid crystal layer of the curved liquid crystal panel is identical for different locations.

10. The method for manufacturing a curved liquid crystal panel as claimed in claim 1 , wherein step (2) uses flat panel coating to form the CF substrate and the array substrate.

11. A method for manufacturing a curved liquid crystal panel, comprising the following steps:
(1) pre-setting radii of curvature of a color filter (CF) substrate and an array substrate of a curved liquid crystal panel;
(2) preparing the CF substrate and the array substrate, the CF substrate and the array substrate being both in the form of a flat panel, wherein the array substrate comprises a plurality of equally spaced data lines lined up thereon and the CF substrate comprises black matrixes arranged thereon in an array, a spacing distance L 2 between two adjacent ones of the data lines and a spacing distance L 1 of the black matrixes in a direction in which the data lines are lined up being arranged to be different according to the pre-set radii of curvature provided in step (1);
(3) separately curving the CF substrate and the array substrate to reach the pre-set radii of curvature of step (1); and
(4) subjecting the curved CF substrate and the curved array substrate, which are separate from each other, to vacuum lamination through curved surface lamination to be laminated together to form a curved liquid crystal panel;
further comprising step (5), in which the vacuum-laminated CF substrate and array substrate are subjected to cutting;
wherein the CF substrate and the array substrate comprise display zones formed thereon to correspond to each other and step (2) comprises coating a loop of enclosure resin on the CF substrate or the array substrate to enclose the display zone and dripping liquid crystal inboard the enclosure resin to form a liquid crystal layer;
wherein the black matrix is formed through exposure with a photo mask;
wherein in step (2), with the CF substrate and the array substrate being in the form of a flat panel, the spacing distance L 2 between two adjacent ones of the data lines and the spacing distance L 1 of the black matrix in the direction in which the data lines are lined up are set in a proportional relationship and with the pre-set radius of curvature of the CF substrate being R and a cell thickness of the liquid crystal layer between the CF substrate and the array substrate being d, L 1 :L 2 =R:(R+d) or L 1 :L 2 =R:(R−d);
wherein in step (4), when the CF substrate and the array substrate are subjected to vacuum lamination through curved surface lamination to be laminated together, the black matrixes are distributed in a curving direction of the curved liquid crystal panel in such a way as to be respectively coincident with the data lines in a radial direction of the curved liquid crystal panel so that pixel areas of the array substrate and the CF substrate match each other;
wherein in step (2), the CF substrate further comprises a plurality of photo spacers formed thereon and based on the radius of curvature that is pre-set for the CF substrate in step (1), heights of the photo spacers at different locations of the CF substrate are set to be different;
wherein in step (2), with the CF substrate and the array substrate in the form of a flat panel, the photo spacers located in a middle portion of the CF substrate have heights greater than those of the photo spacers in two side portions, and in step (4), when the CF substrate and the array substrate are subjected to vacuum lamination through

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelect

Inventors

• Ma Chao
• Lee Yungjui

Classifications

• G02F2001/133354

  Physics · mapped topic

• G02F1/1341 Primary

  Filling or closing of cells · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/133514

  Colour filters · CPC title