Integrated black negative transmission display screen

Abstract

The utility model discloses an integrated black negative transmission display screen which comprises a display screen body, a visible area is arranged on the display screen body, and the display screen body comprises an upper polaroid and a lower polaroid. And black ink for enabling the transparent area of the lower polaroid to be black is screen-printed in the range, exceeding the visible area, of the lower polaroid. The display screen has the effect that the transparent areas of the upper polaroid and the lower polaroid are covered with black ink, so that light leakage around the display screen body caused by light transmission is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to an integrated black negative transmission display screen. Background Art

[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. Liquid crystal display modules are mainly composed of liquid crystal display screens and backlight modules. Negative transmission type display screens are a type of passive LCD. Its main features are black background with white text and high contrast. Liquid crystal is poured into the visible area of ​​the negative transmission type display screen so that the visible area can display content.

[0003] In the prior art, the area outside the visible area of ​​the display screen is a polarizer and glass. The display screen is black when it is not lit, and the transmissive polarizer appears transparent when viewed with the naked eye, so that the entire display screen cannot present an integrated black effect. Under the action of the backlight, light will pass through the polarizer, which can easily cause light leakage problems in the module. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an integrally black negative transmission display screen.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An integrally black negative transmission display screen comprises: a display screen body, a viewing area is arranged on the display screen body, the display screen body comprises an upper polarizer and a lower polarizer, and the lower polarizer is screen-printed with black ink beyond the range of the viewing area for making the transparent area of ​​the lower polarizer appear black.

[0007] In one embodiment, the display screen body further includes an upper layer of glass and a lower layer of glass, and the upper polarizer, the upper layer of glass, the lower layer of glass and the lower polarizer are arranged in sequence.

[0008] In one embodiment, the display screen body is further provided with an effective display area, the effective display area is located in the visible area, liquid crystal is filled in the visible area, the effective display area is used to display content, and no content is displayed between the visible area and the effective display area.

[0009] In one embodiment, the black ink is screen-printed on a side of the lower polarizer away from the lower glass, and the black ink is screen-printed on the back side of the display screen body.

[0010] In one embodiment, the black ink is screen-printed on an area of ​​the lower polarizer outside the visible area, and the black ink is arranged along the circumferential direction of the visible area, and the black ink goes around the visible area.

[0011] In one embodiment, the inner edge of the black ink is flush with the outer edge of the visible area, and the outer edge of the black ink is flush with the outer edge of the lower polarizer.

[0012] In one embodiment, the size of the lower polarizer is the same as that of the upper polarizer, the coverage area of ​​the black ink on the lower polarizer is arranged corresponding to the area of ​​the upper polarizer beyond the visible area, and the area of ​​the upper polarizer beyond the visible area appears black when observed with the naked eye.

[0013] In one embodiment, the thickness of the black ink is 8um-10um.

[0014] In one embodiment, a layer of covering ink is also silk-screened on the side of the black ink facing away from the lower polarizer, and the covering ink is circumferentially arranged on the black ink. The covering ink and the black ink are arranged in a stepped manner, the outer edge of the covering ink is flush with the outer edge of the black ink, and the inner edge of the covering ink is 1mm-2mm away from the inner edge of the black ink.

[0015] In one embodiment, the thickness of the covering ink is 4um-7um.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] 1. The utility model is a one-piece black negative transmission display screen. By screen printing black ink on the lower polarizer beyond the visible area, when the backlight passes through, the transparent area of ​​the lower polarizer is covered by the black ink, so that it appears black under naked eye observation. When observed, the upper polarizer is located above the lower polarizer, and the area of ​​the upper polarizer beyond the visible area also appears black, so that the display screen body presents an one-piece black effect in the off state, and under the action of the backlight, the transparent areas of the upper and lower polarizers will not transmit light, so that the display screen body will not leak light;

[0018] 2. The utility model is an integrated black negative transmission display screen that screen-prints masking ink on one side of the black ink. The masking ink further strengthens the transparent area of ​​the lower polarizer to prevent light from being transmitted under the action of backlight, so that light will not leak from the outer edge of the display screen body. The upper polarizer is also not transparent under the action of the black ink and masking ink on the lower polarizer, thereby ensuring that there will be no light leakage around the display screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the front structure of an integrated black negative transmission display screen provided by the utility model;

[0021] Figure 2 The utility model provides a schematic diagram of a side cross-sectional structure of an integrated black negative transmission display screen.

[0022] Description of the drawings: 10. Display screen body; 101. Effective display area; 102. Visible area; 11. Upper polarizer; 12. Upper glass; 13. Lower glass; 14. Lower polarizer; 20. Black ink; 30. Covering ink. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] A one-piece black negative transmission display screen, referring to Figure 1 , including a display screen body 10, the display screen body 10 includes an upper polarizer 11, an upper glass 12, a lower glass 13 and a lower polarizer 14 arranged in sequence, the upper polarizer 11 and the lower polarizer 14 are both transmission type and appear transparent when observed with the naked eye.

[0025] Reference Figure 1 The display screen body 10 is composed of an effective display area 101 and a visible area 102 arranged outside the effective display area 101. The visible area 102 of the display screen body 10 is filled with liquid crystal. The effective display area 101 of the display screen body 10 is the display area of ​​the display screen body 10, which can display content. Liquid crystal is filled between the visible area 102 and the effective display area 101, but the visible area 102 does not display and appears black. The effective display area 101 of the display screen body 10 also appears black when the screen is off.

[0026] Reference Figure 1 and Figure 2 The size of the upper polarizer 11 and the lower polarizer 14 is larger than the size of the visible area 102. When the display screen body 10 is off, the upper polarizer 11 exceeds the range of the visible area 102 and appears transparent. When the backlight illuminates the display screen body 10, under the transmission effect of the upper polarizer 11 and the lower polarizer 14, light will leak from the outer edges of the upper polarizer 11 and the lower polarizer 14, causing light leakage in the display screen body 10.

[0027] Reference Figure 1 and Figure 2 In order to prevent the upper polarizer 11 and the lower polarizer 14 from transmitting light beyond the visible area 102, the lower polarizer 14 is screen-printed with black ink 20. The black ink 20 is screen-printed on the side of the lower polarizer 14 away from the lower glass 13, that is, on the back of the display screen body 10. The back of the display screen body 10 needs to be assembled with the backlight, and the backlight light is emitted into the display screen body 10 from the back of the display screen body 10.

[0028] Reference Figure 1 and Figure 2 The black ink 20 is screen-printed on the area of ​​the lower polarizer 14 outside the visible area 102 , and the black ink 20 is arranged along the circumferential direction of the visible area 102 , and the black ink 20 surrounds the visible area 102 in one circle.

[0029] Reference Figure 1 and Figure 2 The inner edge of the black ink 20 is flush with the outer edge of the visible area 102, and the outer edge of the black ink 20 is flush with the outer edge of the lower polarizer 14, so that the black ink 20 covers the entire range of the lower polarizer 14 beyond the visible area 102 to cover the transparent area of ​​the lower polarizer 14.

[0030] Reference Figure 1 and Figure 2 , the size of the lower polarizer 14 is the same as that of the upper polarizer 11, and the coverage area of ​​the black ink 20 on the lower polarizer 14 is arranged correspondingly to the area of ​​the upper polarizer 11 beyond the visible area 102, so that the transparent area of ​​the upper polarizer 11 also appears black under naked eye observation. When the light of the backlight passes through, the transparent area of ​​the lower polarizer 14 is covered by the black ink 20 to appear black under naked eye observation, and when observed, the upper polarizer 11 is located above the lower polarizer 14, and the area of ​​the upper polarizer 11 beyond the visible area 102 also appears black, so that the display screen body 10 presents an integrated black effect in the off-screen state, and under the action of the backlight, the transparent areas of the upper polarizer 11 and the lower polarizer 14 will not transmit light, so that the display screen body 10 will not leak light.

[0031] Further, refer to Figure 1 and Figure 2 , the thickness of the black ink 20 is 8um-10um.

[0032] Reference Figure 2 The side of the black ink 20 facing away from the lower polarizer 14 is also screen-printed with a covering ink 30 for further enhancing the black effect of the transparent areas of the lower polarizer 14 and the upper polarizer 11. The covering ink 30 is screen-printed on one side of the black ink 20, and the covering ink 30 is screen-printed circumferentially on the black ink 20.

[0033] Reference Figure 2 The covering ink 30 is black, and the covering ink 30 and the black ink 20 are arranged in a stepped manner. The outer edge of the covering ink 30 is flush with the outer edge of the black ink 20, and the inner edge of the covering ink 30 is 1mm-2mm away from the inner edge of the black ink 20, so that the covering ink 30 and the black ink 20 are arranged in a stepped manner. The covering ink 30 further strengthens the transparent area of ​​the lower polarizer 14 to prevent light from being transmitted under the action of backlight, so that light will not leak from the outer edge of the display screen body 10. The upper polarizer 11 is also not transparent under the action of the black ink 20 and the covering ink 30 on the lower polarizer 14, thereby ensuring that there is no light leakage around the display screen body 10.

[0034] Reference Figure 2 , the thickness of the covering ink 30 is 4um-7um.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An integrally black negative transmission display screen, characterized in that: include: A display screen body (10), wherein a visible area (102) is arranged on the display screen body (10), wherein the display screen body (10) comprises an upper polarizer (11) and a lower polarizer (14), and the lower polarizer (14) is screen-printed with black ink (20) beyond the range of the visible area (102) for making a transparent area of ​​the lower polarizer (14) appear black.

2. The one-piece black negative transmission display screen according to claim 1, characterized in that: The display screen body (10) further comprises an upper layer of glass (12) and a lower layer of glass (13), and the upper polarizer (11), the upper layer of glass (12), the lower layer of glass (13) and the lower polarizer (14) are arranged in sequence.

3. The one-piece black negative transmission display screen according to claim 2, characterized in that: The display screen body (10) is further provided with an effective display area (101), the effective display area (101) being located within the visible area (102), liquid crystal being filled within the visible area (102), the effective display area (101) being used to display content, and no content being displayed between the visible area (102) and the effective display area (101).

4. The one-piece black negative transmission display screen according to claim 3, characterized in that: The black ink (20) is screen-printed on a side of the lower polarizer (14) away from the lower glass (13), and the black ink (20) is screen-printed on the back side of the display screen body (10).

5. The one-piece black negative transmission display screen according to claim 4, characterized in that: The black ink (20) is screen-printed on an area of ​​the lower polarizer (14) outside the visible area (102), and the black ink (20) is arranged along the circumferential direction of the visible area (102), and the black ink (20) goes around the visible area (102).

6. The one-piece black negative transmission display screen according to claim 5, characterized in that: The inner edge of the black ink (20) is flush with the outer edge of the visible area (102), and the outer edge of the black ink (20) is flush with the outer edge of the lower polarizer (14).

7. The one-piece black negative transmission display screen according to claim 6, characterized in that: The size of the lower polarizer (14) is the same as that of the upper polarizer (11); the coverage area of ​​the black ink (20) on the lower polarizer (14) is arranged corresponding to the area of ​​the upper polarizer (11) beyond the visible area (102); and the area of ​​the upper polarizer (11) beyond the visible area (102) appears black when observed with the naked eye.

8. The one-piece black negative transmission display screen according to claim 7, characterized in that: The thickness of the black ink (20) is 8um-10um.

9. The one-piece black negative transmission display screen according to claim 8, characterized in that: A layer of concealing ink (30) is also silk-screened on the side of the black ink (20) facing away from the lower polarizer (14); the concealing ink (30) is circumferentially arranged on the black ink (20); the concealing ink (30) and the black ink (20) are arranged in a stepped manner; the outer edge of the concealing ink (30) is flush with the outer edge of the black ink (20); and the inner edge of the concealing ink (30) is 1 mm to 2 mm away from the inner edge of the black ink (20).

10. The one-piece black negative transmission display screen according to claim 9, characterized in that: The thickness of the covering ink (30) is 4um-7um.

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