Display screen for screening whether cover plate is deformed or not

Abstract

The utility model discloses a display screen used for screening whether a cover plate is deformed, which comprises a backlight module, a display module and a pressure sensing layer which are sequentially superposed from bottom to top, and the pressure sensing layer comprises a deformable shell, and an upper electrode, a conductive material layer and a lower electrode which are arranged in the deformable shell, the deformable shell comprises a top plate and a bottom plate arranged below the top plate, the upper-layer electrode is arranged on the lower surface of the top plate, the lower-layer electrode is arranged on the lower surface of the bottom plate, the conductive material layer is arranged on the lower surface of the upper-layer electrode, a gap is reserved between the conductive material layer and the lower-layer electrode, and the upper-layer electrode and the lower-layer electrode are electrically connected with the display module. The deformation pressure degree can be judged and screened by measuring the resistance value, when the deformation is larger than the pressure degree of the poor whitening, an alarm can be set to be displayed on the LCD module, and finally defective products are eliminated, so that whether the cover plate is deformed or not is efficiently screened.

Description

Technical Field

[0001] This utility model relates to the field of cover plate deformation detection technology, and more specifically, to a display screen for screening whether a cover plate is deformed. Background Technology

[0002] PMMA cover glass may deform in high-temperature environments, potentially causing whitening at the edges of the module. In high-temperature environments, the deformation of the PMMA cover glass is more easily conducted through the OCA optical adhesive to the glass of the display module, causing it to deform simultaneously. This can lead to compression of the liquid crystal within the glass, resulting in whitening or uneven display. This defect can affect the overall performance of the customer's device, therefore it needs to be identified and screened out. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to efficiently screen whether the cover plate is deformed.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] To solve the above-mentioned technical problems, this utility model provides a display screen for screening whether a cover plate is deformed. It includes a backlight module, a display module, and a pressure-sensing layer stacked sequentially from bottom to top. The pressure-sensing layer includes a deformable outer shell and an upper electrode, a conductive material layer, and a lower electrode disposed inside the deformable outer shell. The deformable outer shell includes a top plate and a bottom plate disposed below the top plate. The upper electrode is disposed on the lower surface of the top plate, the lower electrode is disposed on the lower surface of the bottom plate, and the conductive material layer is disposed on the lower surface of the upper electrode. A gap is maintained between the conductive material layer and the lower electrode. The upper and lower electrodes are electrically connected to the display module.

[0006] In a preferred embodiment of the display screen for screening whether a cover plate is deformed, the display module is connected to an alarm.

[0007] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, the alarm is a buzzer.

[0008] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, provided by this utility model, the alarm is an LED light.

[0009] In a preferred embodiment of the display screen for screening whether a cover plate is deformed, as provided by this utility model, there are multiple LED lights, each of which is a different color.

[0010] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, as provided by this utility model, there are three LED lights, and the colors of the three LED lights are red, yellow and green, respectively.

[0011] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, the conductive material layer is made of conductive graphite.

[0012] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, the deformable shell is made of plastic.

[0013] As a preferred embodiment of the display screen for screening whether the cover plate is deformed provided by this utility model, the deformable shell also includes a side wall extending upward from the edge of the bottom plate, and the bottom plate, top plate and side wall form a frame.

[0014] In a preferred embodiment of the display screen for screening whether the cover plate is deformed, the pressure sensing layer extends outward with a pressure-sensitive FPC, and the pressure-sensitive FPC is bound to the display FPC of the display module.

[0015] This utility model has the following beneficial effects:

[0016] During testing, the cover plate is placed above the pressure-sensing layer. When the cover plate deforms, its stress will act on the deformable outer shell of the pressure-sensing layer. Further longitudinal compression causes the conductive material to contact the lower electrode, making the upper and lower electrodes conductive to each other. Different pressure values ​​present different conduction resistance values. Therefore, the degree of deformation pressure can be judged and screened by measuring the resistance value. When the deformation is greater than the pressure level of whitening defects, an alarm can be set and displayed on the LCD module, ultimately eliminating defective products and thus efficiently screening whether the cover plate is deformed. Attached Figure Description

[0017] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a display screen for screening whether a cover plate is deformed, provided by this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the medium pressure sensing layer.

[0020] Figure 3 for Figure 2 A schematic diagram of the deformable shell structure.

[0021] Explanation of icon numbers:

[0022] Backlight module 1; display module 2; pressure sensing layer 3; deformable shell 31; upper electrode 32; conductive material layer 33; lower electrode 34; top plate 311; bottom plate 312; cover plate 4; side wall 313. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] This utility model provides a display screen for screening whether a cover plate is deformed. It includes a backlight module, a display module, and a pressure sensing layer stacked sequentially from bottom to top. The pressure sensing layer includes a deformable shell and an upper electrode, a conductive material layer, and a lower electrode disposed inside the deformable shell. The deformable shell includes a top plate and a bottom plate disposed below the top plate. The upper electrode is disposed on the lower surface of the top plate, the lower electrode is disposed on the lower surface of the bottom plate, and the conductive material layer is disposed on the lower surface of the upper electrode. A gap is maintained between the conductive material layer and the lower electrode. The upper electrode and the lower electrode are electrically connected to the display module.

[0027] During testing, the cover plate is placed above the pressure-sensing layer. When the cover plate deforms, its stress will act on the deformable outer shell of the pressure-sensing layer. Further longitudinal compression causes the conductive material to contact the lower electrode, making the upper and lower electrodes conductive to each other. Different pressure values ​​present different conduction resistance values. Therefore, the degree of deformation pressure can be judged and screened by measuring the resistance value. When the deformation is greater than the pressure level of whitening defects, an alarm can be set and displayed on the LCD module, ultimately eliminating defective products and thus efficiently screening whether the cover plate is deformed.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1, please refer to Figures 1 to 3This invention provides a display screen for screening whether a cover plate is deformed. It includes a backlight module 1, a display module 2, and a pressure-sensing layer 3, stacked sequentially from bottom to top. The pressure-sensing layer 3 includes a deformable outer shell 31 and an upper electrode 32, a conductive material layer 33, and a lower electrode 34 disposed inside the deformable outer shell 31. In this embodiment, the conductive material layer 33 is made of conductive graphite, and the deformable outer shell 31 is made of plastic. The deformable outer shell 31 includes a top plate 311 and a bottom plate 312 disposed below the top plate 311. The upper electrode 32 is disposed on the lower surface of the top plate 311, and the lower electrode 34 is disposed on the lower surface of the bottom plate 312. The conductive material layer 33 is disposed on the lower surface of the upper electrode 32, and a gap is maintained between the conductive material layer 33 and the lower electrode 34. The upper electrode 32 and the lower electrode 34 are electrically connected to the display module 2. During testing, the cover plate 4 is placed above the pressure sensing layer 3. When the cover plate 4 deforms, its stress will act on the deformable outer shell 31 of the pressure sensing layer 3. Further longitudinal compression causes the conductive material to contact the lower electrode 34, making the upper and lower electrodes conduct to each other. Different pressure values ​​present different conduction resistance values. Therefore, the degree of deformation pressure can be judged and screened by measuring the resistance value. When the deformation is greater than the pressure level of whitening defects, an alarm can be set and displayed on the LCD module, and finally defective products are eliminated, thus efficiently screening whether the cover plate 4 is deformed.

[0030] Example 2, please refer to Figures 1 to 3 As a further optimization of Embodiment 1, in this embodiment, the display module 2 is connected to an alarm. The alarm is activated in conjunction with the alarm screen of the display module 2 to notify the staff to determine whether the cover plate 4 is deformed.

[0031] Furthermore, the alarm is a buzzer, which notifies staff through sound to prevent staff from missing inspections.

[0032] Furthermore, the alarm is an LED light that alerts staff via light to prevent them from missing any checks.

[0033] Furthermore, there are multiple LEDs, each with a different color. In this embodiment, there are three LEDs, with red, yellow, and green colors respectively. Different colors represent different degrees of deformation: green indicates a good product, yellow indicates a certain amount of deformation but not exceeding the pressure level for whitening defects, and red indicates a defective product.

[0034] Furthermore, the deformable shell also includes a sidewall 313 extending upward from the edge of the base plate 312. The base plate 312, the top plate 311, and the sidewall 313 form a frame shape. The upper electrode 32, the conductive material layer 33, and the lower electrode 34 are disposed within the space enclosed by the frame-shaped deformable shell.

[0035] Furthermore, the pressure sensing layer 3 extends outward with a pressure-sensitive FPC, which is bound to the display FPC of the display module 2, so that the pressure sensing signal can be transmitted to the display FPC through the pressure-sensitive FPC.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A display screen for screening whether a cover plate is deformed, characterized in that, It includes a backlight module, a display module, and a pressure-sensing layer stacked sequentially from bottom to top. The pressure-sensing layer includes a deformable shell and an upper electrode, a conductive material layer, and a lower electrode disposed inside the deformable shell. The deformable shell includes a top plate and a bottom plate disposed below the top plate. The upper electrode is disposed on the lower surface of the top plate, the lower electrode is disposed on the lower surface of the bottom plate, and the conductive material layer is disposed on the lower surface of the upper electrode. A gap is maintained between the conductive material layer and the lower electrode. The upper electrode and the lower electrode are electrically connected to the display module.

2. The display screen for screening whether a cover plate is deformed according to claim 1, characterized in that, The display module is connected to an alarm.

3. The display screen for screening whether a cover plate is deformed according to claim 2, characterized in that, The alarm is a buzzer.

4. The display screen for screening whether a cover plate is deformed according to claim 2, characterized in that, The alarm is an LED light.

5. The display screen for screening whether a cover plate is deformed according to claim 4, characterized in that, There are multiple LEDs, each of which is a different color.

6. The display screen for screening whether a cover plate is deformed according to claim 5, characterized in that, There are three LED lights, and the colors of the three LED lights are red, yellow and green respectively.

7. The display screen for screening whether a cover plate is deformed according to claim 1, characterized in that, The conductive material layer is made of conductive graphite.

8. The display screen for screening whether a cover plate is deformed according to claim 1, characterized in that, The deformable shell is made of plastic.

9. The display screen for screening whether a cover plate is deformed according to claim 1, characterized in that, The deformable shell also includes sidewalls extending upward from the edge of the base plate, and the base plate, top plate and sidewalls form a frame.

10. The display screen for screening whether a cover plate is deformed according to claim 1, characterized in that, The pressure-sensitive layer extends outwards to a pressure-sensitive FPC, which is then bound to the display FPC of the display module.

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