Negative display LCD (Liquid Crystal Display) frame capable of preventing light leakage

Abstract

The utility model discloses an anti-light-leakage negative display LCD frame, which comprises an upper glass sheet, a lower glass sheet, a VA display area and an AA display area, a circle of black ink is silk-screened on the surface of the lower glass sheet and close to the edge of the frame, the inner side edge of the black ink is flush with the outer side edge of the VA display area, the thickness of the black ink is between 4 microns and 8 microns, and the thickness of the AA display area is between 4 microns and 8 microns. A layer of black ink is arranged between the lower glass sheet and the lower polaroid in a silk-screen mode, the four inner corners of the black ink are all designed to be arc inner corners, the overall shape of the black ink is of a rectangular structure, and a certain gap is reserved between the outer side edge of the black ink and the outer side edge of the lower glass sheet. The layer formed by the black ink can cover the LCD frame glue part, only the VA display area is exposed, the situation that light leaks from the frame glue and light leakage occurs is avoided, and therefore the display effect of the negative display LCD screen is better and more uniform, and the watching experience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal displays, in particular to a light leakage-proof negative display LCD frame. Background Art

[0002] With the development of technology, liquid crystal display screens have become an indispensable part of our daily life. Among liquid crystal displays, negative LCD screens are a special kind of screen. Its appearance has brought us more choices and more convenience. Negative LCD screens are a special kind of liquid crystal display screen. Compared with ordinary liquid crystal displays, the biggest difference lies in the display effect. Negative LCD screens use negative display technology, which means that white words are displayed when the background is black.

[0003] Negative LCD screens are widely popular in the market because of their high contrast and low price. Among negative LCD screens, VA-LCD has the best contrast. When paired with high-brightness backlight, it can present a display effect with higher surface brightness and higher contrast.

[0004] However, we found during use that the negative LCD screen has a darker background color and is extremely sensitive to light leakage. Therefore, how to avoid light leakage is a difficult problem for negative LCD modules. The current common method is to stick a layer of black light-shielding double-sided adhesive on the backlight. Although this method can play a certain light-shielding role, there is a problem that some light will leak out from the LCD frame glue position after the backlight is installed, thus affecting the display effect. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a light leakage-proof negative display LCD frame, comprising an upper glass sheet, a lower glass sheet, a VA display area and an AA display area, a circle of black ink is silk-screened on the surface of the lower glass sheet near the edge of the frame, and the inner side edge of the black ink is flush with the outer side edge of the VA display area.

[0007] As a further solution of the utility model: the thickness of the black ink is between 4 microns and 8 microns, and the four inner corners of the black ink are designed to be circular arc inner corners.

[0008] As a further solution of the utility model: the overall shape of the black ink is a rectangular structure, and a certain gap is left between the outer edge of the black ink and the outer edge of the lower glass sheet.

[0009] As a further solution of the utility model: it also includes an upper polarizer, liquid crystal, frame glue and a lower polarizer.

[0010] As a further solution of the utility model: the upper polarizer is installed on the top surface of the upper glass sheet, and the liquid crystal is installed between the upper glass sheet and the lower glass sheet.

[0011] As a further solution of the utility model: the frame glue is arranged on the outer surface of the liquid crystal, and the top and the bottom of the frame glue are respectively attached to the upper glass sheet and the lower glass sheet.

[0012] As a further solution of the utility model: the lower polarizer is installed at the bottom of the lower glass sheet, and the lower polarizer covers the black ink.

[0013] As a further solution of the utility model: the thickness of the upper glass sheet is the same as that of the lower glass sheet, and the thickness of the upper polarizer is the same as that of the lower polarizer.

[0014] As a further solution of the present invention: the AA display area is arranged inside the VA display area, and the AA display area is in a rectangular shape.

[0015] As a further solution of the utility model: the black ink is completed by silk screen printing once or multiple times.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] In the present application, a layer of black ink is screen-printed between the lower glass sheet and the lower polarizer. The layer formed by the black ink can cover the LCD frame glue part, exposing only the VA display area, thereby avoiding light leakage from the frame glue and causing light leakage, thereby making the display effect of the negative display LCD screen better and more uniform, greatly improving the viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the side sectional structure of the utility model as a whole;

[0019] Figure 2 It is a schematic diagram of the top view of the black ink of the utility model.

[0020] The reference numerals and names in the figures are as follows:

[0021] 1. Upper polarizer; 2. Upper glass; 3. Liquid crystal; 4. Frame glue; 5. Lower glass; 6. Black ink; 7. Lower polarizer; 8. VA display area; 9. AA display area. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2 A light leakage-proof negative display LCD frame comprises an upper glass sheet 2, a lower glass sheet 5, a VA display area 8 and an AA display area 9, wherein the AA display area 9 is arranged on the inner side of the VA display area 8, the AA display area 9 is in a rectangular shape, the VA display area 8 is a visible area, and the AA display area 9 is an operable area. A circle of black ink 6 is screen-printed on the surface of the lower glass sheet 5 near the edge of the frame, and the inner side of the black ink 6 is flush with the outer side of the VA display area 8; the thickness of the black ink 6 is between 4 microns and 8 microns, and the four inner corners of the black ink 6 are designed to be arc inner corners; the overall shape of the black ink 6 is a rectangular structure, and a certain gap is left between the outer side of the black ink 6 and the outer side of the lower glass sheet 5, and the black ink 6 is completed by one screen printing or multiple screen printings.

[0024] It should be noted that the thickness of the black ink 6 can be achieved by one silk screen printing or multiple silk screen printings. The thickness of the black ink 6 can be achieved by one silk screen printing, which can save the process. The thickness of the black ink 6 can be achieved by multiple silk screen printings, which can achieve uniform thickness without missing prints. The specific silk screen printing method to be used can be determined according to the actual situation. The black ink 6 is evenly silk-screened on the outer edge of the lower glass sheet 5 in a rectangular structure, so that the distribution of the black ink 6 can be more uniform, which can further reduce the occurrence of light leakage.

[0025] See also Figure 2 In this embodiment, it also includes an upper polarizer 1, a liquid crystal 3, a frame glue 4 and a lower polarizer 7; the upper polarizer 1 is installed on the top surface of the upper glass sheet 2, and the liquid crystal 3 is installed between the upper glass sheet 2 and the lower glass sheet 5; the frame glue 4 is arranged on the outer surface of the liquid crystal 3, and the top and bottom of the frame glue 4 are respectively attached to the upper glass sheet 2 and the lower glass sheet 5, the upper glass sheet 2 and the lower glass sheet 5 have the same thickness, and the upper polarizer 1 and the lower polarizer 7 have the same thickness.

[0026] Specifically, the above structure is a main component of the negative display LCD module and can be used normally in subsequent assembly.

[0027] See also Figure 2 In this embodiment, the lower polarizer 7 is installed at the bottom of the lower glass sheet 5, and the lower polarizer 7 covers the black ink 6.

[0028] Specifically, the black ink 6 is disposed between the lower glass sheet 5 and the lower polarizer 7, so that the black ink 6 can be used to cover the LCD frame glue portion, leaving only the VA display area 8 exposed, thereby avoiding the risk of light leaking from the frame glue.

[0029] In summary, by screen-printing a layer of black ink 6 between the lower glass sheet 5 and the lower polarizer 7, the display effect of the negative display LCD screen can be better and more uniform, greatly improving the viewing experience.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A light leakage-proof negative display LCD frame, comprising an upper glass sheet (2), a lower glass sheet (5), a VA display area (8) and an AA display area (9), characterized in that: A circle of black ink (6) is silk-screened on the surface of the lower glass sheet (5) near the edge of the frame, and the inner side edge of the black ink (6) is flush with the outer side edge of the VA display area (8).

2. The anti-light leakage negative display LCD frame according to claim 1, characterized in that: The thickness of the black ink (6) is between 4 micrometers and 8 micrometers, and the four inner corners of the black ink (6) are all designed to be circular arc inner corners.

3. The light leakage-proof negative display LCD frame according to claim 1, characterized in that: The overall shape of the black ink (6) is a rectangular structure, and a certain gap is left between the outer edge of the black ink (6) and the outer edge of the lower glass sheet (5).

4. The light leakage-proof negative display LCD frame according to claim 1, characterized in that: It also includes an upper polarizer (1), liquid crystal (3), frame glue (4) and a lower polarizer (7).

5. The anti-light leakage negative display LCD frame according to claim 4, characterized in that: The upper polarizer (1) is mounted on the top surface of the upper glass sheet (2), and the liquid crystal (3) is mounted between the upper glass sheet (2) and the lower glass sheet (5).

6. The light leakage-proof negative display LCD frame according to claim 4, characterized in that: The frame glue (4) is arranged on the outer surface of the liquid crystal (3), and the top and bottom of the frame glue (4) are respectively attached to the upper glass sheet (2) and the lower glass sheet (5).

7. The light leakage-proof negative display LCD frame according to claim 4, characterized in that: The lower polarizer (7) is installed at the bottom of the lower glass sheet (5), and the lower polarizer (7) covers the black ink (6).

8. The light leakage-proof negative display LCD frame according to claim 4, characterized in that: The upper glass sheet (2) and the lower glass sheet (5) have the same thickness, and the upper polarizer (1) and the lower polarizer (7) have the same thickness.

9. The light leakage-proof negative display LCD frame according to claim 1, characterized in that: The AA display area (9) is arranged inside the VA display area (8), and the AA display area (9) is in a rectangular shape.

10. The light leakage-proof negative display LCD frame according to claim 1, characterized in that: The black ink (6) is applied by silk screen printing once or multiple times.

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