Liquid crystal display panel and method for manufacturing the same and liquid crystal display apparatus

• US 10,503,026 B2
• Filed: 08/31/2015
• Issued: 12/10/2019
• Est. Priority Date: 04/24/2015
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Zhang, Jun
• Primary Examiner(s): Glick, Edward J
• Assistant Examiner(s): Chung, David Y
• Application Number:
  US15/037,436
• Publication Number:
  US 20170108728A1
• Time in Patent Office: 1,562 Days
• Field of Search: None
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13396 Spacers having different sizes
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• CPC Class Codes: G02F 1/13415 Drop filling process

Abstract

The present disclosure provides a liquid crystal display panel having a long side defining a first direction and a short side defining a second direction, and the long side has a length greater than that of the short side. The liquid crystal display panel includes a first substrate, a second substrate and a plurality of spacers arranged between the first substrate and the second substrate, wherein liquid crystal droplets are able to flow among the plurality of spacers, and wherein the plurality of spacers are configured and arranged such that a sum of cross sectional areas of the plurality of spacers per unit length in the first direction is greater than a sum of cross sectional areas of the plurality of spacers per unit length in the second direction. The liquid crystal display panel provided by the present disclosure may reduce the contamination at the periphery of a small size TFT-LCD device and facilitate flowing and diffusing of the liquid crystal droplets to corners of the device. As such, the present disclosure also provides a method for manufacturing the liquid crystal display panel and a liquid crystal display apparatus including the above liquid crystal display panel.

Claims

1. A liquid crystal display panel having a long side defining a first direction and a short side defining a second direction, and the liquid crystal display panel comprising a first substrate, a second substrate and a plurality of spacers arranged between the first substrate and the second substrate, wherein liquid crystal droplets are able to flow among the plurality of spacers, and

wherein the plurality of spacers are configured and arranged such that a sum of cross sectional areas of the plurality of spacers per unit length in the first direction is greater than a sum of cross sectional areas of the plurality of spacers per unit length in the second direction, so as to enable the liquid crystal droplets to have a flow rate in the first direction greater than that in the second direction,

wherein the plurality of spacers are divided into a plurality of rows of spacers in the first direction, each spacer in at least one row has a cross section in a shape of circle, and the at least one row is arranged in a middle region of the liquid crystal display panel in the second direction, the plurality of rows except the at least one row are arranged on both sides of the middle region, on each side of the middle region, the plurality of rows except the at least one row are adjacent to each other, and each spacer in the plurality of rows except the at least one row has a cross section in a shape of elongated ellipse, and a long axis of the ellipse is tilted relative to the first direction, an angle between the long axis and the first direction is greater than 0 and less than or equal to 45 degrees.

2. The liquid crystal display panel according to claim 1, wherein the plurality of spacers have an arrangement density in the first direction greater than that in the second direction.

3. The liquid crystal display panel according to claim 2, wherein at least one of the plurality of spacers has a cross section in a shape of circle.

4. The liquid crystal display panel according to claim 3, wherein a spacing between any two adjacent spacers in the first direction of the plurality of spacers is less than a spacing between any two adjacent spacers in the second direction of the plurality of spacers.

5. The liquid crystal display panel according to claim 1, wherein the spacers are arranged in a central symmetry with respect to a center of the display panel.

6. The liquid crystal display panel according to claim 1, wherein the plurality of spacers have an arrangement density in corner regions, at which the long and short sides of the liquid crystal display panel intersect with each other, less than that in a central region of the liquid crystal display panel.

7. A liquid crystal display apparatus comprising the liquid crystal display panel according to claim 1.

8. The liquid crystal display apparatus according to claim 7, wherein the plurality of spacers have an arrangement density in the first direction greater than that in the second direction.

9. The liquid crystal display apparatus according to claim 8, wherein a spacing between any two adjacent spacers in the first direction of the plurality of spacers is less than a spacing between any two adjacent spacers in the second direction of the plurality of spacers.

10. A method for manufacturing a liquid crystal display panel, the liquid crystal display panel having a long side defining a first direction and a short side defining a second direction, wherein the long side has a length greater than that of the short side, wherein the method comprises:

providing a first substrate, a second substrate and a plurality of spacers arranged between the first substrate and the second substrate, wherein the plurality of spacers are configured and arranged such that a sum of cross sectional areas of the plurality of spacers per unit length in the first direction is greater than a sum of cross sectional areas of the plurality of spacers per unit length in the second direction, the plurality of spacers are divided into a plurality of rows of spacers in the first direction, each spacer in at least one row has a cross section in a shape of circle, and the at least one row is arranged in a middle region of the liquid crystal display panel in the second direction, the plurality of rows except the at least one row are arranged on both sides of the middle region, on each side of the middle region, the plurality of rows except the at least one row are adjacent to each other, and each spacer in the plurality of rows except the at least one row has a cross section in a shape of elongated ellipse, a long axis of the ellipse is tilted relative to the first direction, an angle between the long axis and the first direction is greater than 0 and less than or equal to 45 degrees; and

providing liquid crystal droplets flowing among the plurality of spacers.

11. The method according to claim 10, wherein the plurality of spacers have an arrangement density in the first direction greater than that in the second direction.

12. The method according to claim 11, wherein a spacing between any two adjacent spacers in the first direction of the plurality of spacers is less than a spacing between any two adjacent spacers in the second direction of the plurality of spacers.

13. The method according to claim 11, wherein at least one of the plurality of spacers has a cross section in a shape of circle.

14. The method according to claim 10, wherein the plurality of spacers have an arrangement density in corner regions, at which the long and short sides of the liquid crystal display panel intersect with each other, less than that in a central region of the liquid crystal display panel.