Segment code screen, display device and automobile

Abstract

The utility model discloses a segment code screen, a display device and an automobile, the segment code screen and a cover plate are laminated and located below the cover plate, the segment code screen comprises a first substrate and a second substrate which are laminated from top to bottom, and a liquid crystal layer used for forming characters is filled between the first substrate and the second substrate. Wherein the segment code screen comprises a display area and a non-display area, the display area is composed of the liquid crystal layer, at least part of the non-display area is coated with a first ink layer, and the segment code screen is coated with the first ink layer through primary blade coating of a silk screen frame and secondary blade coating of a scraper; and the projection of the first ink layer is at least partially overlapped with the projection of a second ink layer arranged on the cover plate. According to the segment code screen, the display device and the automobile, light leakage of the segment code screen can be reduced, and the display effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display equipment field, concretely relates to a segment code screen, display device and car. BACKGROUND

[0002] At present, printing technology is widely applied in display equipment field, especially in instrument industry, for example, printing technology is widely used in segment code screen instrument, segment code screen air conditioner panel and other display equipment of automobile, ink layer is set to reduce the demarcation line between display area and non-display area in display equipment, and the appearance and user's visual effect are improved. But in some cases, when the user's visual angle is at the best visual angle position of the segment code screen, the backlight will leak from the non-display area of the segment code screen, which will cause the contrast of display content to decrease, and the light will appear without the segment code screen being opened, that is, the light leakage problem will occur.

[0003] Therefore, a segment code screen, display device and car are provided to reduce the light leakage of the segment code screen and improve the display effect, which becomes a technical problem to be solved. UTILITY MODEL CONTENT

[0004] Based on the above status, the main purpose of the utility model is to provide a segment code screen, display device and car to reduce the light leakage of the segment code screen and improve the display effect.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] In the first aspect, the utility model discloses a segment code screen, which is stacked with a cover plate and located below the cover plate, and comprises a first substrate and a second substrate stacked from top to bottom, and a liquid crystal layer filled between the first substrate and the second substrate for forming characters, wherein:

[0007] The segment code screen comprises a display area and a non-display area, the display area is composed of the liquid crystal layer, and the non-display area is at least partially coated with a first ink layer, the first ink layer is coated on the segment code screen through primary squeegee coating by a silk screen frame and secondary squeegee coating by a scraper, and the projection of the first ink layer at least partially overlaps the projection of a second ink layer arranged on the cover plate.

[0008] Optionally, the thickness of the first ink layer is 8-16 microns.

[0009] Optionally, the first ink layer is coated on the side of the second substrate away from the first substrate.

[0010] Optionally, the surface roughness Ra of the first ink layer is less than 1.0 micron.

[0011] Optionally, the first ink layer is a UV-curable ink.

[0012] Optionally, the segment code screen further comprises shockproof points, and the arrangement profile of the shockproof points is the same as the arrangement profile of the display area of the segment code screen.

[0013] In a second aspect, the utility model discloses a display device, comprising the cover plate and the segment code screen of any one of the first aspect.

[0014] Optionally, the cover plate is provided with a second ink layer, and the projection of the second ink layer at least partially overlaps the projection of the first ink layer.

[0015] Optionally, the display device is at least one of a segment code screen instrument, a segment code screen air conditioner panel and a door protection segment code screen display panel.

[0016] In a third aspect, the utility model discloses an automobile, comprising the segment code screen of any one of the first aspect or comprising the display device of any one of the second aspect.

[0017] Beneficial effects:

[0018] According to the segment code screen, the display device and the automobile disclosed by the utility model embodiment, the first ink layer is coated on the non-display area of the segment code screen, and the first ink layer is coated on the segment code screen after primary squeegee coating by a silk screen frame and secondary squeegee coating by a squeegee. By coating the first ink layer directly on the non-display area of the segment code screen, a physical barrier is formed to block light leakage. When the segment code screen is lighted, only the display area that needs to display images transmits light, so that the display content is clearer and the display effect is improved. The air gap between the first ink layer and the segment code screen is eliminated, so that the light leakage intensity is reduced and the display effect is improved. Moreover, since the first ink layer can accurately cover the non-display area of the segment code screen, the backlight overflow from the edge of the segment code screen can be avoided, so that the character boundary is clearer, the edge light leakage phenomenon caused by alignment deviation is eliminated, and the display effect is further improved.

[0019] Other beneficial effects of the utility model will be described in the specific implementation mode through the introduction of specific technical features and technical solutions. Those skilled in the art should understand the beneficial technical effects brought by the technical features and technical solutions through the introduction of the technical features and technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0020] The preferred embodiments of the segment code screen, the display device and the automobile of the utility model will be described below with reference to the drawings. In the drawings:

[0021] Figure 1 It is a structure schematic view of the segment code screen disclosed by the embodiment;

[0022] Figure 2 A schematic view of the segment code screen coated with an ink layer according to the embodiment is shown in the following figure;

[0023] Figure 3 A simplified structure schematic view of the display device provided by the embodiment is shown in the following figure. DETAILED DESCRIPTION

[0024] The utility model will be described based on the embodiments, but the utility model is not limited to these embodiments only. In the following detailed description of the utility model, some specific details are described in detail in order to avoid confusion of the essence of the utility model, and the well-known methods, processes, procedures and elements are not described in detail.

[0025] In addition, the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0026] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0027] In the description of the utility model, it should be understood that the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more.

[0028] In order to reduce the light leakage of the segment code screen and improve the display effect, the embodiment discloses a segment code screen, please refer to Figure 1 and Figure 2 , Figure 1 A structure schematic view of the segment code screen according to the embodiment is shown in the following figure, Figure 2 A schematic view of the segment code screen coated with an ink layer according to the embodiment is shown in the following figure.

[0029] As shown in Figure 1 The segment code screen 10 includes a first substrate 11 and a second substrate 12 stacked from top to bottom, and a liquid crystal layer 17 constituting a segment code screen character is arranged between the first substrate 11 and the second substrate 12. The liquid crystal layer 17 can present a light-emitting character in the segment code screen when energized. In the embodiment, since there are multiple characters on the segment code screen, and the multiple characters may be discontinuous, the liquid crystal layer 17 also has multiple liquid crystal layers 17, and the multiple liquid crystal layers 17 may be discontinuous. The whole segment code screen 10 is stacked with an external cover plate 21, and the segment code screen 10 is tightly connected with the cover plate 21 below the cover plate 21.

[0030] The segment code screen 10 further comprises a display area 16 and a non-display area 15, wherein the display area 16 is composed of a liquid crystal layer 17, and the non-display area 15 is other area on the segment code screen 10 except the display area 16. The non-display area 15 is at least partially coated with a first ink layer 13, which is coated on the segment code screen through a first screen mesh frame coating and a second squeegee coating, and the projection of the first ink layer 13 at least partially overlaps the projection of the second ink layer arranged on the cover plate 21.

[0031] In the embodiment, at least part of the non-display area 15 is coated with the first ink layer 13, which is directly coated on the segment code screen 10, so as to cover the backlight and avoid the backlight from entering the liquid crystal layer 17 to cause light leakage. In the specific implementation process, the first ink layer 13 can also be coated on some or all of the non-display area 15 according to the processing cost and display effect. The first screen mesh frame coating is a process of transferring ink to the segment code screen through a screen. The patterned part (i.e. the non-display area 15) of the screen is open, and the ink is extruded onto the segment code screen by the pressure of the squeegee. The excess ink can be evenly spread after the first coating by the screen mesh frame through the back ink squeegee, so as to ensure the uniform thickness of the first ink layer 13 coated on the segment code screen.

[0032] In the specific implementation process, the screen is used as a pattern template, and a hollow pattern completely matched with the non-display area 15 of the segment code screen can be formed on the screen through a photoetching process. Then, the UV-curable ink is extruded through the screen hole by using the squeegee at a specific angle (for example, 60-75°) and pressure (for example, 0.4-0.6 MPa), so as to realize the pattern transfer with micron-level precision. The coating tolerance can be controlled within ±25 μm by using the screen mesh frame for coating.

[0033] After the first coating by the screen mesh frame, the ink on the segment code screen presents the non-Newtonian fluid characteristics, and the edge accumulation effect caused by the surface tension will cause the thickness difference. Therefore, the back ink squeegee is used for the second coating at a reverse uniform speed (0.4-0.6 m / s), so as to destroy the internal structure of the ink, reduce the viscosity of the ink, realize the leveling, and also recycle the excess ink. The double-coating process can improve the film thickness uniformity of the printed first ink layer 13, and also reduce the surface roughness of the first ink layer 13.

[0034] The first ink layer 13 is printed on the segment screen according to the scheme disclosed in the embodiment, and compared with the scheme in the prior art that the first ink layer 13 is arranged on the cover plate, the ink is directly attached to the surface of the segment screen, the air gap between the first ink layer 13 and the segment screen is eliminated, the interface reflection is reduced to a single layer, and the light leakage intensity is reduced. In addition, since the ink precisely covers the non-display area 15, the backlight can also be prevented from overflowing from the edge of the segment screen, so that the character boundary is clearer, and the edge light leakage phenomenon caused by the alignment deviation can also be eliminated.

[0035] In an optional embodiment, the thickness of the first ink layer 13 is 8 μm to 16 μm. In the embodiment, the light shielding ability of the first ink layer 13 has a nonlinear relationship with the thickness of the first ink layer 13, and the light shielding rate formula R∝1-e -αd may be referred to, where α is the light absorption coefficient of the first ink layer 13, and d is the thickness. When the thickness d increases to a critical value, the light transmittance approaches zero. In the specific implementation process, when the ink thickness is greater than or equal to 8 μm, the light shielding rate can reach more than 95% (light transmittance <5%); when the thickness is greater than 16 μm, the marginal benefit decreases, and the adhesion of the first ink layer 13 may decrease due to the excessive thickness, and the cost increases at the same time. Therefore, by setting the thickness of the first ink layer 13 to 8 μm to 16 μm, the light shielding rate can be ensured while the production cost is controlled.

[0036] In an optional embodiment, the first ink layer 13 is coated on the side of the second substrate 12 away from the first substrate 11, that is, the first ink layer 13 is coated on the back of the segment screen 10. In the embodiment, the back of the segment screen refers to the side away from the observer. By arranging the first ink layer 13 on the back of the segment screen, the first ink layer 13 is protected by the substrate, and the scratch resistance and chemical resistance of the first ink layer 13 are significantly improved, and there is no need to arrange an additional protective layer for the first ink layer 13, thereby reducing the process complexity and cost.

[0037] In an optional embodiment, the surface roughness Ra of the first ink layer 13 is less than 1.0 μm. In this embodiment, during the printing of the first ink layer 13, the printing speed and the doctor blade pressure directly affect the physical properties and optical performance of the first ink layer 13. When the printing speed is low, the shear rate of the ink is low, the fluidity is poor, and the ink is prone to insufficient filling, and the film thickness of the first ink layer 13 is prone to be large, and the ink is prone to be piled up at the edge; when the printing speed is high, the shear rate of the ink is high, the shear thinning of the ink is obvious, the viscosity is reduced, the leveling property is improved, but the overall film thickness is prone to be thin, and local missing printing may occur. When the doctor blade pressure is small, in the low pressure state, the ink transfer may be insufficient, the film thickness may be uneven, and the edge definition may be reduced; when the doctor blade pressure is large, in the high pressure state, the screen deformation may be increased, the pattern may be distorted, the ink may be penetrated too much, and the problems of burr or jagged edge may occur. Therefore, the printing speed and the doctor blade pressure need to be controlled during printing, and preferably, the printing speed can be controlled at 50±10 cm / s, and the doctor blade pressure can be controlled at 0.5±0.1 mpa, so that the film thickness uniformity and the surface roughness of the printed first ink layer 13 meet the conditions. In the specific implementation process, the surface morphology of the first ink layer 13 can be analyzed by using a 3D profilometer or an atomic force microscope (AFM), and preferably, the surface roughness Ra of the first ink layer 13 is less than 0.8 μm, which is the best.

[0038] In an optional embodiment, the thickness uniformity U of the first ink layer 13 is greater than or equal to 90%. During the ink coating process, when the pressure is insufficient, the first ink layer 13 may appear "corrugated" and uneven; when the pressure is too high, the edge "collapses", and the overall thickness uniformity of the first ink layer 13 is greatly different. Therefore, the best printing effect of the first ink layer 13 can be ensured by calculating the thickness uniformity of the first ink layer 13.

[0039] In an optional embodiment, the first ink layer 13 is a UV-curable ink. In this embodiment, the UV-curable ink is cured by ultraviolet light, the curing speed is fast, almost no solvent is volatilized during curing, the ink shrinkage rate is low, the designed thickness and edge sharpness can be maintained, which is suitable for precision printing, reduces the screen blockage, and prolongs the service life of the screen. Moreover, the UV ink can be cured layer by layer, avoiding mutual penetration of uncured layers, which is suitable for light-shielding structures that need multiple printing, and is more environmentally friendly.

[0040] In an optional embodiment, the segment code screen further comprises a shockproof point 14, and the arrangement profile of the shockproof point 14 is the same as the arrangement profile of the display area 16 of the segment code screen 10. In this embodiment, as shown in FIG. 2, the shockproof point 14 is arranged in the display area 16 of the segment code screen 10, and the arrangement profile of the shockproof point 14 is the same as the arrangement profile of the display area 16 of the segment code screen 10. The shockproof point 14 is arranged in the display area 16 of the segment code screen 10, and the arrangement profile of the shockproof point 14 is the same as the arrangement profile of the display area 16 of the segment code screen 10. The shockproof point 14 is arranged in the display area 16 of the segment code screen 10, and the arrangement profile of the shockproof point 14 is the same as the arrangement profile of the display area 16 of the segment code screen 10. Figure 1As shown in the figure, the shockproof points 14 can be arranged between the first substrate 11 and the second substrate 12, and the shockproof points 14 can also be arranged between adjacent liquid crystal layers 17, thereby maintaining the liquid crystal cell thickness of the whole segment code screen. In the specific implementation process, the shockproof points 14 can be formed between the first substrate 11 and the second substrate 12 through a UV printing process and fixed through a pressing and ultraviolet curing process, thereby forming a stable support structure. The display area 16 refers to an area with a display pattern, and it can be understood that, in actual application, since there can be multiple display areas 16 in the segment code screen and the shapes are different, when the shockproof points 14 are arranged, the arrangement contour of the shockproof points 14 can be determined in combination with the outer contours of the multiple display areas 16, so as to take into account cost effectiveness and aesthetics.

[0041] In the specific implementation process, the shockproof points 14 can be point-shaped, strip-shaped, or other shapes. Preferably, the shockproof points 14 are circular in the orthographic projection of the display screen, the circular shockproof points 14 have a small occupied area and good geometric symmetry, and can significantly reduce the shadow area generated thereby, so that the area of the shockproof points 14 is not directly exposed when the screen is lit, and the display effect and aesthetics are better.

[0042] According to the segment code screen disclosed in the embodiment of the utility model, the first ink layer is coated on the non-display area of the segment code screen after the first ink layer is coated on the segment code screen through the first screen frame scraping and the second scraping plate scraping. By coating the ink layer directly on the non-display area of the segment code screen, the air gap between the first ink layer and the segment code screen can be eliminated, thereby reducing the light leakage intensity and improving the display effect. Moreover, since the first ink layer can accurately cover the non-display area of the segment code screen, the backlight can also be prevented from overflowing from the edge of the segment code, thereby making the character boundary clearer, and the edge light leakage phenomenon caused by the alignment deviation can also be eliminated, further improving the display effect.

[0043] Please refer to Figure 3 , Figure 3 The simplified structure schematic diagram of the display device provided in the embodiment. The embodiment of the utility model also discloses a display device, such as Figure 3 As shown in the figure, the display device 20 comprises a cover plate 21 and the segment code screen 10 provided in any one of the above-mentioned embodiments. In the embodiment, the cover plate 21 is arranged above the segment code screen 10 and fixedly connected with the segment code screen 10, and the cover plate 21 can protect the segment code screen 10 below.

[0044] In an optional embodiment, the cover plate 21 is further provided with a second ink layer. In this embodiment, the second ink layer is arranged on the cover plate 21 at a position corresponding to the non-display area 15 of the segment code screen 10. By arranging the second ink layer on the cover plate 21, the effect of integral black can be achieved, thereby improving the user's visual experience when the screen is off. In the specific implementation process, the projection of the first ink layer 13 arranged on the segment code screen 10 can at least partially overlap the projection of the second ink layer arranged on the cover plate 21. By at least partially overlapping the ink layers arranged on the two components (the segment code screen 10 and the cover plate 21), the display effect of the entire display device can be further improved.

[0045] In an optional embodiment, the display device is at least one of a segment code screen instrument, a segment code screen air conditioner panel, and a door guard segment code screen display panel. In this embodiment, the segment code screen instrument, the segment code screen air conditioner panel, and the door guard segment code screen display panel can all be configured on a vehicle.

[0046] The utility model embodiment further discloses a vehicle, comprising segment code screen 10 provided by any one of the above embodiments, or comprising display device 20 provided by any one of the above embodiments.

[0047] Those skilled in the art can understand that the above preferred embodiments can be freely combined and superimposed without conflict. In the drawings, the flowchart and block diagram illustrate the possible implementation architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, program segment or part of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks can occur in different order from that marked in the drawings, for example, two consecutive blocks can actually be executed in parallel, and sometimes they can be executed in reverse order, depending on the function involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions. The numbering of the steps in this paper is only for the convenience of explanation and reference, and does not limit the front and rear order, and the specific execution order is determined by the technology itself, and those skilled in the art can determine various allowed and reasonable orders according to the technology itself.

[0048] Those skilled in the art can understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0049] It should be understood that the above-mentioned embodiments are only exemplary and non-limiting, and those skilled in the art can make various obvious or equivalent modifications or replacements to the above details without departing from the basic principles of the present application, and all will be included in the scope of the claims of the present application.

Claims

1. A segment code screen which is stacked with a cover plate (21) and is located below the cover plate (21), characterized in that, The segment code screen (10) comprises a first substrate (11) and a second substrate (12) stacked from top to bottom, and a liquid crystal layer (17) for forming characters is filled between the first substrate (11) and the second substrate (12), wherein: The segment code screen (10) comprises a display area (16) and a non-display area (15), the display area (16) is composed of the liquid crystal layer (17), and the non-display area (15) is at least partially coated with a first ink layer (13), the first ink layer (13) is coated on the segment code screen through primary screen mesh frame coating and secondary squeegee coating, and a projection of the first ink layer (13) at least partially overlaps with a projection of a second ink layer arranged on the cover plate (21).

2. The segment code screen of claim 1, wherein, The thickness of the first ink layer (13) is 8-16 μm.

3. The segment code screen of claim 1, wherein, The first ink layer (13) is coated on a side of the second substrate (12) away from the first substrate (11).

4. The segment code screen of claim 1, wherein, The surface roughness Ra of the first ink layer (13) is less than 1.0 μm.

5. The segment code screen of claim 1, wherein, The first ink layer (13) is a UV-cured ink.

6. The segment code screen of claim 1, wherein, The segment code screen (10) is further provided with shockproof points (14), and the arrangement profile of the shockproof points (14) is the same as that of the display area (16) of the segment code screen (10).

7. A display device, characterized by comprising: The display device comprises a cover plate (21) and the segment code screen (10) according to any one of claims 1-6.

8. The display device according to claim 7, wherein The cover plate (21) is provided with a second ink layer, and a projection of the second ink layer at least partially overlaps with a projection of the first ink layer (13).

9. The display device according to claim 7, wherein The display device is at least one of a segment code screen instrument, a segment code screen air conditioner panel and a door guard segment code screen display panel.

10. An automobile characterized by comprising: The display device comprises the segment code screen according to any one of claims 1-6 or the display device according to any one of claims 7-9.

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