Patent Application
20220050347
The subject matter herein generally relates to the technical field of displays, specifically a method for manufacturing a liquid crystal display panel.
Liquid crystal display (LCD) panels with large display sizes such as 4:3 or 16:9 are common. If the liquid crystal display panels with small display sizes such as 4:1 or 16:3 are required, a mask needs to be redesigned and the manufacturing process re-developed for a new product, which consumes a lot of manpower, time, and cost.
Therefore, there is room for improvement in the art.
Implementations of the present disclosure will now be described, by way of embodiment, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art that the exemplary embodiments described herein may be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the exemplary embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
The term “comprising” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references can mean “at least one”.
The example method is provided by way of example, as there are a variety of ways to carry out the method. The method described below can be carried out using the configurations illustrated in
In Block S1, an array substrate is provided.
As shown in
In
The array substrate 10 includes a plurality of scan lines (not shown), a plurality of data lines (not shown), a gate driving circuit 16, and a source driving circuit 18. The scan lines are in the first display area 12 and extend along a direction D1 which is parallel to the line between B and C, and the data lines are in the first display area 12 and extend along direction D2 which is parallel to the BA line, thus direction D1 is at a right angle to direction D2. The data lines and the scan lines intersect to define a plurality of sub-pixels. The gate driving circuit 16 and the source driving circuit 18 are both located in the non-display area 14 for controlling the first display area 12 to display images.
The gate driving circuit 16 and the source driving circuit 18 are at two adjacent peripheries, outside the BC line and outside the CD line of the first display area 12. The gate driving circuit 16 includes a gate driver 162 and a plurality of gate lines 164. The source driving circuit 18 includes a source driver 182 and a plurality of source lines 184. The scan lines are electrically connected to the gate driver 162 through the gate lines 164, and the data lines are electrically connected to the source driver 182 through the source lines 184. The gate driver 162 is used to drive the scan lines. The source driver 182 applies voltages to the sub-pixels through the data lines.
The first display area 12 includes a second display area 122 of a second size (less than the first size). The second display area 122 is an area defined by the rectangular HBCG The second display area 122 includes an actual display area 1222 (an area defined by the rectangular BCEF) and an undesired display area 1224 (an area defined by the rectangular FEGH). The gate driving circuit 16 and the source driving circuit 18 remain at the same peripheries of the actual display area 1222. The undesired display area 1224 is not used for screen display, and is an area set in consideration of subsequent coating accuracy of sealant and subsequent cutting accuracy. The edge HG of the undesired display area 1224 forms an inner boundary when applying sealant as a coating in a subsequent step.
In one embodiment, a screen resolution of the first display area 12 of the first size is 1920*1080, and a screen resolution of the actual display area 1222 is 1920*720. That is, a length of AF is one third of a length of AB, and an area of the actual display area 1222 is one third of an area of the first display area 12. That is, the array substrate 10 and a color filter substrate 30 (labeled in
In Block S2, the sealant is applied as a coating.
As shown in
In one embodiment, a width of the applied sealant 20 can be adjusted as needed.
In one embodiment, a width of the undesired display area 1224 (i.e., a length of the FH line) ranges from 0.3 mm to 5 mm. That is, the sealant 20 is applied to a distance of about 0.3 mm to 5 mm from the actual display area 1222, so as to avoid the size of the actual display area 1222 being affected by the coating accuracy of the sealant 20 and the subsequent cutting accuracy.
In one embodiment, Block S2 further includes curing the sealant 20 by ultraviolet radiation curing or thermal curing.
In Block S3, liquid crystal is applied.
In one embodiment, liquid crystal is injected into the second display area 122. That is, the sealant 20 defines the second display area 122 of the second size, and the liquid crystal is only injected into the area corresponding to the second display area 122 and not into the entire first display area 12. The method of directly cutting a display panel with a large display size and a large screen resolution into a liquid crystal display panel with a small display size and a small screen resolution saves liquid crystal materials.
In Block S4, sealing and coupling are performed.
As shown in
In one embodiment, the color filter substrate 30 is used for a liquid crystal display panel with a large display size and a large screen resolution. In
In Block S5, a cutting process is performed.
In one embodiment, the liquid crystal cell is cut along an outer periphery of the sealant 20 to obtain a liquid crystal display panel 100 with a small display size and a low screen resolution.
In
As shown in
In one embodiment, the color filter substrate 30 is provided with a black matrix for shielding, corresponding to the undesired display area 1224. In other embodiments, the undesired display area 1224 may be shielded by a metal frame. The undesired display area 1224 can also be blocked by giving a black picture.
In one embodiment, the actual display area 1222 may have a non-standard shape. That is, a shape of the second display area 122 defined by the sealant 20 is a non-standard shape. In the cutting step, the data lines and scan lines in the first display area 12 may be cut, but the gate driver 162 and the source driver 182 are never cut.
In one embodiment, the actual display area 1222 may be rectangular, and two adjacent peripheries of the actual display area 1222 are close to the gate driving circuit 16 and the source driving circuit 18. In the cutting step, cutting is performed along direction D2, so that the scan lines in the first display area 12 and the source lines 184 in the non-display area 14 are cut, while the gate driver 162 and the source driver 182 are not cut. Alternatively, in the cutting step, cutting is performed in both directions, D1 and D2, so that the scan lines and data lines in the first display area 12, and the source lines 184 and the gate lines 164 in the non-display area 14 are cut, but the gate driver 162 and the source driver 182 are not cut.
The embodiment of the present disclosure also provides a liquid crystal display panel obtained by the above method. It can be seen from
In the method for manufacturing the liquid crystal display panel, by changing the sealant coating process and adding a panel cutting process, a liquid crystal display panel with a first display area of a first size (i.e., a large display size) can be changed to a liquid crystal display panel having an actual display area with a small display size instead of redesigning and doing development work necessary for a new product, which saves manpower, time, and cost.
It is to be understood, even though information and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the present exemplary embodiments, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the present exemplary embodiments to the full extent indicated by the plain meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010809455.3 | Aug 2020 | CN | national |
